CVE-2024-35854

{"dataType": "CVE_RECORD", "cveMetadata": {"cveId": "CVE-2024-35854", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T13:50:33.106Z", "datePublished": "2024-05-17T14:47:30.775Z", "dateUpdated": "2026-08-05T11:30:18.702Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:30:18.702Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehash\n\nThe rehash delayed work migrates filters from one region to another\naccording to the number of available credits.\n\nThe migrated from region is destroyed at the end of the work if the\nnumber of credits is non-negative as the assumption is that this is\nindicative of migration being complete. This assumption is incorrect as\na non-negative number of credits can also be the result of a failed\nmigration.\n\nThe destruction of a region that still has filters referencing it can\nresult in a use-after-free [1].\n\nFix by not destroying the region if migration failed.\n\n[1]\nBUG: KASAN: slab-use-after-free in mlxsw_sp_acl_ctcam_region_entry_remove+0x21d/0x230\nRead of size 8 at addr ffff8881735319e8 by task kworker/0:31/3858\n\nCPU: 0 PID: 3858 Comm: kworker/0:31 Tainted: G W 6.9.0-rc2-custom-00782-gf2275c2157d8 #5\nHardware name: Mellanox Technologies Ltd. MSN3700/VMOD0005, BIOS 5.11 01/06/2019\nWorkqueue: mlxsw_core mlxsw_sp_acl_tcam_vregion_rehash_work\nCall Trace:\n <TASK>\n dump_stack_lvl+0xc6/0x120\n print_report+0xce/0x670\n kasan_report+0xd7/0x110\n mlxsw_sp_acl_ctcam_region_entry_remove+0x21d/0x230\n mlxsw_sp_acl_ctcam_entry_del+0x2e/0x70\n mlxsw_sp_acl_atcam_entry_del+0x81/0x210\n mlxsw_sp_acl_tcam_vchunk_migrate_all+0x3cd/0xb50\n mlxsw_sp_acl_tcam_vregion_rehash_work+0x157/0x1300\n process_one_work+0x8eb/0x19b0\n worker_thread+0x6c9/0xf70\n kthread+0x2c9/0x3b0\n ret_from_fork+0x4d/0x80\n ret_from_fork_asm+0x1a/0x30\n </TASK>\n\nAllocated by task 174:\n kasan_save_stack+0x33/0x60\n kasan_save_track+0x14/0x30\n __kasan_kmalloc+0x8f/0xa0\n __kmalloc+0x19c/0x360\n mlxsw_sp_acl_tcam_region_create+0xdf/0x9c0\n mlxsw_sp_acl_tcam_vregion_rehash_work+0x954/0x1300\n process_one_work+0x8eb/0x19b0\n worker_thread+0x6c9/0xf70\n kthread+0x2c9/0x3b0\n ret_from_fork+0x4d/0x80\n ret_from_fork_asm+0x1a/0x30\n\nFreed by task 7:\n kasan_save_stack+0x33/0x60\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3b/0x60\n poison_slab_object+0x102/0x170\n __kasan_slab_free+0x14/0x30\n kfree+0xc1/0x290\n mlxsw_sp_acl_tcam_region_destroy+0x272/0x310\n mlxsw_sp_acl_tcam_vregion_rehash_work+0x731/0x1300\n process_one_work+0x8eb/0x19b0\n worker_thread+0x6c9/0xf70\n kthread+0x2c9/0x3b0\n ret_from_fork+0x4d/0x80\n ret_from_fork_asm+0x1a/0x30"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The only path into the vulnerable rehash work is local configuration of hardware-offloaded tc flower filters via rtnetlink (`mlxsw_sp_flower_replace` \u2192 `mlxsw_sp_acl_rule_add`), plus the devlink `acl_region_rehash_interval` knob; the multicast-routing ruleset that could be influenced by received traffic explicitly disables rehash, so no received packet reaches this code.\nAC:L - The attacker controls every precondition \u2014 the number, priority and mask diversity of offloaded filters, and hence the eRP/TCAM resource exhaustion that makes migration and its rollback fail \u2014 while the rehash delayed work re-arms itself automatically every 5 s, so there is no race to win and no state outside the attacker's influence.\nPR:L - Installing offloaded flower filters requires only CAP_NET_ADMIN checked against the owning network namespace's user_ns (`netlink_net_capable(skb, CAP_NET_ADMIN)`), which an unprivileged user holds in their own user namespace once a switch port is delegated to that netns \u2014 not real root in the initial namespace.\nUI:N - The attacker performs all steps itself \u2014 adding and removing tc flower rules until the device runs out of resources \u2014 and the periodic rehash worker then fires on its own with no victim action.\nS:U - The freed object and all subsequent dereferences are kernel heap memory within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The freed `mlxsw_sp_acl_tcam_region` comes from a sprayable general-purpose kmalloc cache and is later dereferenced as `cregion->region->tcam_region_info` and `cregion->parman`, so reclaiming the slot lets the attacker steer reads to arbitrary kernel addresses; per use-after-free scoring this is High.\nI:H - The same stale allocation is used for an indirect call `cregion->ops->entry_remove(...)` and for `parman_item_remove()`/`rhashtable_remove_fast()`/`list_del()` writes, giving both a control-flow-hijack and a controlled-write primitive; stale `tcam_region_info` is additionally written to the ASIC, corrupting the switch's hardware ACL state.\nA:H - The confirmed KASAN slab-use-after-free in `mlxsw_sp_acl_ctcam_region_entry_remove()` runs from the `mlxsw_core` workqueue and reliably oopses/panics the kernel, and because the work re-arms every 5 s the condition recurs until the switch is unusable."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c"], "versions": [{"version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "e118e7ea24d1392878ef85926627c6bc640c4388", "status": "affected", "versionType": "git"}, {"version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "a429a912d6c779807f4d72a6cc0a1efaaa3613e1", "status": "affected", "versionType": "git"}, {"version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "4c89642ca47fb620914780c7c51d8d1248201121", "status": "affected", "versionType": "git"}, {"version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "813e2ab753a8f8c243a39ede20c2e0adc15f3887", "status": "affected", "versionType": "git"}, {"version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "311eeaa7b9e26aba5b3d57b09859f07d8e9fc049", "status": "affected", "versionType": "git"}, {"version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "a02687044e124f8ccb427cd3632124a4e1a7d7c1", "status": "affected", "versionType": "git"}, {"version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "54225988889931467a9b55fdbef534079b665519", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c"], "versions": [{"version": "5.1", "status": "affected"}, {"version": "0", "lessThan": "5.1", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.275", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.216", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.158", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.90", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.30", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8.9", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.4.275"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.10.216"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.15.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.1.90"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.6.30"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.8.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.9"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e118e7ea24d1392878ef85926627c6bc640c4388"}, {"url": "https://git.kernel.org/stable/c/a429a912d6c779807f4d72a6cc0a1efaaa3613e1"}, {"url": "https://git.kernel.org/stable/c/4c89642ca47fb620914780c7c51d8d1248201121"}, {"url": "https://git.kernel.org/stable/c/813e2ab753a8f8c243a39ede20c2e0adc15f3887"}, {"url": "https://git.kernel.org/stable/c/311eeaa7b9e26aba5b3d57b09859f07d8e9fc049"}, {"url": "https://git.kernel.org/stable/c/a02687044e124f8ccb427cd3632124a4e1a7d7c1"}, {"url": "https://git.kernel.org/stable/c/54225988889931467a9b55fdbef534079b665519"}], "title": "mlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehash", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-416", "lang": "en", "description": "CWE-416 Use After Free"}]}], "affected": [{"vendor": "linux", "product": "linux_kernel", "cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "c9c9af91f1d9", "status": "affected"}]}, {"vendor": "linux", "product": "linux_kernel", "cpes": ["cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "5.1", "status": "affected"}]}, {"vendor": "linux", "product": "linux_kernel", "cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "0", "status": "unaffected"}]}, {"vendor": "linux", "product": "linux_kernel", "cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "5.4.275", "status": "unaffected"}]}, {"vendor": "linux", "product": "linux_kernel", "cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "5.10.216", "status": "unaffected"}]}, {"vendor": "linux", "product": "linux_kernel", "cpes": ["cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "5.15.158", "status": "unaffected"}]}, {"vendor": "linux", "product": "linux_kernel", "cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "6.1.90", "status": "unaffected"}]}, {"vendor": "linux", "product": "linux_kernel", "cpes": ["cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "6.6.30", "status": 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Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-01-16T21:17:40.149Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:21:47.699Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/e118e7ea24d1392878ef85926627c6bc640c4388", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a429a912d6c779807f4d72a6cc0a1efaaa3613e1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/4c89642ca47fb620914780c7c51d8d1248201121", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/813e2ab753a8f8c243a39ede20c2e0adc15f3887", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/311eeaa7b9e26aba5b3d57b09859f07d8e9fc049", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a02687044e124f8ccb427cd3632124a4e1a7d7c1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/54225988889931467a9b55fdbef534079b665519", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": ["x_transferred"]}]}]}, "dataVersion": "5.2"}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/e118e7ea24d1392878ef85926627c6bc640c4388", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a429a912d6c779807f4d72a6cc0a1efaaa3613e1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/4c89642ca47fb620914780c7c51d8d1248201121", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/813e2ab753a8f8c243a39ede20c2e0adc15f3887", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/311eeaa7b9e26aba5b3d57b09859f07d8e9fc049", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a02687044e124f8ccb427cd3632124a4e1a7d7c1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/54225988889931467a9b55fdbef534079b665519", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:21:47.699Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2024-35854", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2024-05-17T16:58:28.959142Z"}}}], "affected": [{"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "affected", "version": "c9c9af91f1d9"}], "defaultStatus": "unknown"}, {"cpes": ["cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "affected", "version": "5.1"}], "defaultStatus": "unknown"}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "unaffected", "version": "0"}], "defaultStatus": "unknown"}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "unaffected", "version": "5.4.275"}], "defaultStatus": "unknown"}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "unaffected", "version": "5.10.216"}], "defaultStatus": "unknown"}, {"cpes": ["cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "unaffected", "version": "5.15.158"}], "defaultStatus": "unknown"}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "unaffected", "version": "6.1.90"}], "defaultStatus": "unknown"}, {"cpes": ["cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "unaffected", "version": "6.6.30"}], "defaultStatus": "unknown"}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "unaffected", "version": "6.8.9"}], "defaultStatus": "unknown"}, {"cpes": ["cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*"], "vendor": "linux", "product": "linux_kernel", "versions": [{"status": "unaffected", "version": "6.9"}], "defaultStatus": "unknown"}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-05-17T17:06:14.156Z"}}], "cna": {"title": "mlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehash", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - The only path into the vulnerable rehash work is local configuration of hardware-offloaded tc flower filters via rtnetlink (`mlxsw_sp_flower_replace` \u2192 `mlxsw_sp_acl_rule_add`), plus the devlink `acl_region_rehash_interval` knob; the multicast-routing ruleset that could be influenced by received traffic explicitly disables rehash, so no received packet reaches this code.\nAC:L - The attacker controls every precondition \u2014 the number, priority and mask diversity of offloaded filters, and hence the eRP/TCAM resource exhaustion that makes migration and its rollback fail \u2014 while the rehash delayed work re-arms itself automatically every 5 s, so there is no race to win and no state outside the attacker's influence.\nPR:L - Installing offloaded flower filters requires only CAP_NET_ADMIN checked against the owning network namespace's user_ns (`netlink_net_capable(skb, CAP_NET_ADMIN)`), which an unprivileged user holds in their own user namespace once a switch port is delegated to that netns \u2014 not real root in the initial namespace.\nUI:N - The attacker performs all steps itself \u2014 adding and removing tc flower rules until the device runs out of resources \u2014 and the periodic rehash worker then fires on its own with no victim action.\nS:U - The freed object and all subsequent dereferences are kernel heap memory within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The freed `mlxsw_sp_acl_tcam_region` comes from a sprayable general-purpose kmalloc cache and is later dereferenced as `cregion->region->tcam_region_info` and `cregion->parman`, so reclaiming the slot lets the attacker steer reads to arbitrary kernel addresses; per use-after-free scoring this is High.\nI:H - The same stale allocation is used for an indirect call `cregion->ops->entry_remove(...)` and for `parman_item_remove()`/`rhashtable_remove_fast()`/`list_del()` writes, giving both a control-flow-hijack and a controlled-write primitive; stale `tcam_region_info` is additionally written to the ASIC, corrupting the switch's hardware ACL state.\nA:H - The confirmed KASAN slab-use-after-free in `mlxsw_sp_acl_ctcam_region_entry_remove()` runs from the `mlxsw_core` workqueue and reliably oopses/panics the kernel, and because the work re-arms every 5 s the condition recurs until the switch is unusable."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "e118e7ea24d1392878ef85926627c6bc640c4388", "versionType": "git"}, {"status": "affected", "version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "a429a912d6c779807f4d72a6cc0a1efaaa3613e1", "versionType": "git"}, {"status": "affected", "version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "4c89642ca47fb620914780c7c51d8d1248201121", "versionType": "git"}, {"status": "affected", "version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "813e2ab753a8f8c243a39ede20c2e0adc15f3887", "versionType": "git"}, {"status": "affected", "version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "311eeaa7b9e26aba5b3d57b09859f07d8e9fc049", "versionType": "git"}, {"status": "affected", "version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "a02687044e124f8ccb427cd3632124a4e1a7d7c1", "versionType": "git"}, {"status": "affected", "version": "c9c9af91f1d9a636aecc55302c792538e549a430", "lessThan": "54225988889931467a9b55fdbef534079b665519", "versionType": "git"}], "programFiles": ["drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.1"}, {"status": "unaffected", "version": "0", "lessThan": "5.1", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.275", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.216", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.158", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.90", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.30", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.8.9", "versionType": "semver", "lessThanOrEqual": "6.8.*"}, {"status": "unaffected", "version": "6.9", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/e118e7ea24d1392878ef85926627c6bc640c4388"}, {"url": "https://git.kernel.org/stable/c/a429a912d6c779807f4d72a6cc0a1efaaa3613e1"}, {"url": "https://git.kernel.org/stable/c/4c89642ca47fb620914780c7c51d8d1248201121"}, {"url": "https://git.kernel.org/stable/c/813e2ab753a8f8c243a39ede20c2e0adc15f3887"}, {"url": "https://git.kernel.org/stable/c/311eeaa7b9e26aba5b3d57b09859f07d8e9fc049"}, {"url": "https://git.kernel.org/stable/c/a02687044e124f8ccb427cd3632124a4e1a7d7c1"}, {"url": "https://git.kernel.org/stable/c/54225988889931467a9b55fdbef534079b665519"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehash\n\nThe rehash delayed work migrates filters from one region to another\naccording to the number of available credits.\n\nThe migrated from region is destroyed at the end of the work if the\nnumber of credits is non-negative as the assumption is that this is\nindicative of migration being complete. This assumption is incorrect as\na non-negative number of credits can also be the result of a failed\nmigration.\n\nThe destruction of a region that still has filters referencing it can\nresult in a use-after-free [1].\n\nFix by not destroying the region if migration failed.\n\n[1]\nBUG: KASAN: slab-use-after-free in mlxsw_sp_acl_ctcam_region_entry_remove+0x21d/0x230\nRead of size 8 at addr ffff8881735319e8 by task kworker/0:31/3858\n\nCPU: 0 PID: 3858 Comm: kworker/0:31 Tainted: G W 6.9.0-rc2-custom-00782-gf2275c2157d8 #5\nHardware name: Mellanox Technologies Ltd. MSN3700/VMOD0005, BIOS 5.11 01/06/2019\nWorkqueue: mlxsw_core mlxsw_sp_acl_tcam_vregion_rehash_work\nCall Trace:\n <TASK>\n dump_stack_lvl+0xc6/0x120\n print_report+0xce/0x670\n kasan_report+0xd7/0x110\n mlxsw_sp_acl_ctcam_region_entry_remove+0x21d/0x230\n mlxsw_sp_acl_ctcam_entry_del+0x2e/0x70\n mlxsw_sp_acl_atcam_entry_del+0x81/0x210\n mlxsw_sp_acl_tcam_vchunk_migrate_all+0x3cd/0xb50\n mlxsw_sp_acl_tcam_vregion_rehash_work+0x157/0x1300\n process_one_work+0x8eb/0x19b0\n worker_thread+0x6c9/0xf70\n kthread+0x2c9/0x3b0\n ret_from_fork+0x4d/0x80\n ret_from_fork_asm+0x1a/0x30\n </TASK>\n\nAllocated by task 174:\n kasan_save_stack+0x33/0x60\n kasan_save_track+0x14/0x30\n __kasan_kmalloc+0x8f/0xa0\n __kmalloc+0x19c/0x360\n mlxsw_sp_acl_tcam_region_create+0xdf/0x9c0\n mlxsw_sp_acl_tcam_vregion_rehash_work+0x954/0x1300\n process_one_work+0x8eb/0x19b0\n worker_thread+0x6c9/0xf70\n kthread+0x2c9/0x3b0\n ret_from_fork+0x4d/0x80\n ret_from_fork_asm+0x1a/0x30\n\nFreed by task 7:\n kasan_save_stack+0x33/0x60\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3b/0x60\n poison_slab_object+0x102/0x170\n __kasan_slab_free+0x14/0x30\n kfree+0xc1/0x290\n mlxsw_sp_acl_tcam_region_destroy+0x272/0x310\n mlxsw_sp_acl_tcam_vregion_rehash_work+0x731/0x1300\n process_one_work+0x8eb/0x19b0\n worker_thread+0x6c9/0xf70\n kthread+0x2c9/0x3b0\n ret_from_fork+0x4d/0x80\n ret_from_fork_asm+0x1a/0x30"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.275", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.216", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.158", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.90", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.30", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8.9", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.9", "versionStartIncluding": "5.1"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:30:18.702Z"}}}, "cveMetadata": {"cveId": "CVE-2024-35854", "state": "PUBLISHED", "dateUpdated": "2026-08-05T11:30:18.702Z", "dateReserved": "2024-05-17T13:50:33.106Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-17T14:47:30.775Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"unknown", "product": "linux_kernel", "vendor": "linux", "versions": [{"status": "unaffected", "version": "6.6.30"}]}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [{"status": "unaffected", "version": "6.8.9"}]}, {"cpes": ["cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [{"status": "unaffected", "version": "6.9"}]}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "3F22F46B-3154-4E42-87AC-3DC5B9D9EA1C", "versionEndExcluding": "5.4.275", "versionStartIncluding": "5.1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A44ABF89-F1BD-4C9A-895D-7596650DCD27", "versionEndExcluding": "5.10.216", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "65D80EF6-76AF-4186-B680-55516EA42EED", "versionEndExcluding": "5.15.158", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "59CEDDCF-5C0D-4939-9CFE-2F4524892DD3", "versionEndExcluding": "6.1.90", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "84046DAF-73CF-429D-9BA4-05B658B377B5", "versionEndExcluding": "6.6.30", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5F9041E5-8358-4EF7-8F98-B812EDE49612", "versionEndExcluding": "6.8.9", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*", "matchCriteriaId": "22BEDD49-2C6D-402D-9DBF-6646F6ECD10B", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*", "matchCriteriaId": "DF73CB2A-DFFD-46FB-9BFE-AA394F27EA37", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*", "matchCriteriaId": "52048DDA-FC5A-4363-95A0-A6357B4D7F8C", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*", "matchCriteriaId": "A06B2CCF-3F43-4FA9-8773-C83C3F5764B2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*", "matchCriteriaId": "F850DCEC-E08B-4317-A33B-D2DCF39F601B", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehash\n\nThe rehash delayed work migrates filters from one region to another\naccording to the number of available credits.\n\nThe migrated from region is destroyed at the end of the work if the\nnumber of credits is non-negative as the assumption is that this is\nindicative of migration being complete. This assumption is incorrect as\na non-negative number of credits can also be the result of a failed\nmigration.\n\nThe destruction of a region that still has filters referencing it can\nresult in a use-after-free [1].\n\nFix by not destroying the region if migration failed.\n\n[1]\nBUG: KASAN: slab-use-after-free in mlxsw_sp_acl_ctcam_region_entry_remove+0x21d/0x230\nRead of size 8 at addr ffff8881735319e8 by task kworker/0:31/3858\n\nCPU: 0 PID: 3858 Comm: kworker/0:31 Tainted: G W 6.9.0-rc2-custom-00782-gf2275c2157d8 #5\nHardware name: Mellanox Technologies Ltd. MSN3700/VMOD0005, BIOS 5.11 01/06/2019\nWorkqueue: mlxsw_core mlxsw_sp_acl_tcam_vregion_rehash_work\nCall Trace:\n <TASK>\n dump_stack_lvl+0xc6/0x120\n print_report+0xce/0x670\n kasan_report+0xd7/0x110\n mlxsw_sp_acl_ctcam_region_entry_remove+0x21d/0x230\n mlxsw_sp_acl_ctcam_entry_del+0x2e/0x70\n mlxsw_sp_acl_atcam_entry_del+0x81/0x210\n mlxsw_sp_acl_tcam_vchunk_migrate_all+0x3cd/0xb50\n mlxsw_sp_acl_tcam_vregion_rehash_work+0x157/0x1300\n process_one_work+0x8eb/0x19b0\n worker_thread+0x6c9/0xf70\n kthread+0x2c9/0x3b0\n ret_from_fork+0x4d/0x80\n ret_from_fork_asm+0x1a/0x30\n </TASK>\n\nAllocated by task 174:\n kasan_save_stack+0x33/0x60\n kasan_save_track+0x14/0x30\n __kasan_kmalloc+0x8f/0xa0\n __kmalloc+0x19c/0x360\n mlxsw_sp_acl_tcam_region_create+0xdf/0x9c0\n mlxsw_sp_acl_tcam_vregion_rehash_work+0x954/0x1300\n process_one_work+0x8eb/0x19b0\n worker_thread+0x6c9/0xf70\n kthread+0x2c9/0x3b0\n ret_from_fork+0x4d/0x80\n ret_from_fork_asm+0x1a/0x30\n\nFreed by task 7:\n kasan_save_stack+0x33/0x60\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3b/0x60\n poison_slab_object+0x102/0x170\n __kasan_slab_free+0x14/0x30\n kfree+0xc1/0x290\n mlxsw_sp_acl_tcam_region_destroy+0x272/0x310\n mlxsw_sp_acl_tcam_vregion_rehash_work+0x731/0x1300\n process_one_work+0x8eb/0x19b0\n worker_thread+0x6c9/0xf70\n kthread+0x2c9/0x3b0\n ret_from_fork+0x4d/0x80\n ret_from_fork_asm+0x1a/0x30"}, {"lang": "es", "value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: mlxsw: spectrum_acl_tcam: Corrige posible use after free durante el rehash El trabajo retrasado del rehash migra filtros de una regi\u00f3n a otra seg\u00fan la cantidad de cr\u00e9ditos disponibles. La regi\u00f3n que ha migrado se destruye al final del trabajo si el n\u00famero de cr\u00e9ditos no es negativo, ya que se supone que esto es indicativo de que la migraci\u00f3n se ha completado. Esta suposici\u00f3n es incorrecta ya que una cantidad no negativa de cr\u00e9ditos tambi\u00e9n puede ser el resultado de una migraci\u00f3n fallida. La destrucci\u00f3n de una regi\u00f3n que todav\u00eda tiene filtros que hacen referencia a ella puede resultar en un use after free [1]. Soluci\u00f3n al no destruir la regi\u00f3n si la migraci\u00f3n fallo. [1] ERROR: KASAN: slab-use-after-free en mlxsw_sp_acl_ctcam_region_entry_remove+0x21d/0x230 Lectura del tama\u00f1o 8 en la direcci\u00f3n ffff8881735319e8 por tarea kworker/0:31/3858 CPU: 0 PID: 3858 Comm: kworker/0:31 Tainted : GW 6.9.0-rc2-custom-00782-gf2275c2157d8 #5 Nombre de hardware: Mellanox Technologies Ltd. MSN3700/VMOD0005, BIOS 5.11 06/01/2019 Cola de trabajo: mlxsw_core mlxsw_sp_acl_tcam_vregion_rehash_work Seguimiento de llamadas: dump_stack_lvl+ 0xc6/0x120 imprimir_informe+ 0xce/0x670 kasan_report+0xd7/0x110 mlxsw_sp_acl_ctcam_region_entry_remove+0x21d/0x230 mlxsw_sp_acl_ctcam_entry_del+0x2e/0x70 mlxsw_sp_acl_atcam_entry_del+0x81/0x210 _tcam_vchunk_migrate_all+0x3cd/0xb50 mlxsw_sp_acl_tcam_vregion_rehash_work+0x157/0x1300 Process_one_work+0x8eb/0x19b0 worker_thread+0x6c9/0xf70 kthread+0x2c9/0x3b0 ret_from_fork+ 0x4d/0x80 ret_from_fork_asm+0x1a/0x30 Asignado por tarea 174: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x8f/0xa0 __kmalloc+0x19c/0x360 _tcam_region_create+0xdf/0x9c0 mlxsw_sp_acl_tcam_vregion_rehash_work+0x954/0x1300 process_one_work+0x8eb /0x19b0 worker_thread+0x6c9/0xf70 kthread+0x2c9/0x3b0 ret_from_fork+0x4d/0x80 ret_from_fork_asm+0x1a/0x30 Freed by task 7: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 free_info+0x3b/0x60 poison_slab_object+0x102/0x170 __kasan_slab_free+0x14 /0x30 kfree+0xc1/0x290 mlxsw_sp_acl_tcam_region_destroy+0x272/0x310 mlxsw_sp_acl_tcam_vregion_rehash_work+0x731/0x1300 process_one_work+0x8eb/0x19b0 worker_thread+0x6c9/0xf70 9/0x3b0 ret_from_fork+0x4d/0x80 ret_from_fork_asm+0x1a/0x30"}], "id": "CVE-2024-35854", "lastModified": "2026-08-04T11:17:59.287", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-35854", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2024-05-17T16:58:28.959142Z", "version": "2.0.3"}}]}, "published": "2024-05-17T15:15:22.450", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/311eeaa7b9e26aba5b3d57b09859f07d8e9fc049"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4c89642ca47fb620914780c7c51d8d1248201121"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/54225988889931467a9b55fdbef534079b665519"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/813e2ab753a8f8c243a39ede20c2e0adc15f3887"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a02687044e124f8ccb427cd3632124a4e1a7d7c1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a429a912d6c779807f4d72a6cc0a1efaaa3613e1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e118e7ea24d1392878ef85926627c6bc640c4388"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/311eeaa7b9e26aba5b3d57b09859f07d8e9fc049"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4c89642ca47fb620914780c7c51d8d1248201121"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/54225988889931467a9b55fdbef534079b665519"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/813e2ab753a8f8c243a39ede20c2e0adc15f3887"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a02687044e124f8ccb427cd3632124a4e1a7d7c1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a429a912d6c779807f4d72a6cc0a1efaaa3613e1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e118e7ea24d1392878ef85926627c6bc640c4388"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2024:4352", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.8.1.rt7.349.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-07-08T00:00:00Z"}, {"advisory": "RHSA-2024:4211", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.8.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-07-02T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2025:3215", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "kernel-0:5.14.0-427.61.1.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2025-03-26T00:00:00Z"}], "bugzilla": {"description": "kernel: mlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehash", "id": "2281253", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2281253"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehash\nThe rehash delayed work migrates filters from one region to another\naccording to the number of available credits.\nThe migrated from region is destroyed at the end of the work if the\nnumber of credits is non-negative as the assumption is that this is\nindicative of migration being complete. This assumption is incorrect as\na non-negative number of credits can also be the result of a failed\nmigration.\nThe destruction of a region that still has filters referencing it can\nresult in a use-after-free [1].\nFix by not destroying the region if migration failed.\n[1]\nBUG: KASAN: slab-use-after-free in mlxsw_sp_acl_ctcam_region_entry_remove+0x21d/0x230\nRead of size 8 at addr ffff8881735319e8 by task kworker/0:31/3858\nCPU: 0 PID: 3858 Comm: kworker/0:31 Tainted: G W 6.9.0-rc2-custom-00782-gf2275c2157d8 #5\nHardware name: Mellanox Technologies Ltd. MSN3700/VMOD0005, BIOS 5.11 01/06/2019\nWorkqueue: mlxsw_core mlxsw_sp_acl_tcam_vregion_rehash_work\nCall Trace:\n<TASK>\ndump_stack_lvl+0xc6/0x120\nprint_report+0xce/0x670\nkasan_report+0xd7/0x110\nmlxsw_sp_acl_ctcam_region_entry_remove+0x21d/0x230\nmlxsw_sp_acl_ctcam_entry_del+0x2e/0x70\nmlxsw_sp_acl_atcam_entry_del+0x81/0x210\nmlxsw_sp_acl_tcam_vchunk_migrate_all+0x3cd/0xb50\nmlxsw_sp_acl_tcam_vregion_rehash_work+0x157/0x1300\nprocess_one_work+0x8eb/0x19b0\nworker_thread+0x6c9/0xf70\nkthread+0x2c9/0x3b0\nret_from_fork+0x4d/0x80\nret_from_fork_asm+0x1a/0x30\n</TASK>\nAllocated by task 174:\nkasan_save_stack+0x33/0x60\nkasan_save_track+0x14/0x30\n__kasan_kmalloc+0x8f/0xa0\n__kmalloc+0x19c/0x360\nmlxsw_sp_acl_tcam_region_create+0xdf/0x9c0\nmlxsw_sp_acl_tcam_vregion_rehash_work+0x954/0x1300\nprocess_one_work+0x8eb/0x19b0\nworker_thread+0x6c9/0xf70\nkthread+0x2c9/0x3b0\nret_from_fork+0x4d/0x80\nret_from_fork_asm+0x1a/0x30\nFreed by task 7:\nkasan_save_stack+0x33/0x60\nkasan_save_track+0x14/0x30\nkasan_save_free_info+0x3b/0x60\npoison_slab_object+0x102/0x170\n__kasan_slab_free+0x14/0x30\nkfree+0xc1/0x290\nmlxsw_sp_acl_tcam_region_destroy+0x272/0x310\nmlxsw_sp_acl_tcam_vregion_rehash_work+0x731/0x1300\nprocess_one_work+0x8eb/0x19b0\nworker_thread+0x6c9/0xf70\nkthread+0x2c9/0x3b0\nret_from_fork+0x4d/0x80\nret_from_fork_asm+0x1a/0x30"], "name": "CVE-2024-35854", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-35854\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-35854\nhttps://lore.kernel.org/linux-cve-announce/2024051740-CVE-2024-35854-d17b@gregkh/T"], "threat_severity": "Low"}

{}