CVE-2023-54318

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-54318", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-30T12:06:44.531Z", "datePublished": "2025-12-30T12:23:48.134Z", "dateUpdated": "2026-10-15T21:41:44.789Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:19:14.490Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add\n\nWhile doing smcr_port_add, there maybe linkgroup add into or delete\nfrom smc_lgr_list.list at the same time, which may result kernel crash.\nSo, use smc_lgr_list.lock to protect smc_lgr_list.list iterate in\nsmcr_port_add.\n\nThe crash calltrace show below:\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nPGD 0 P4D 0\nOops: 0000 [#1] SMP NOPTI\nCPU: 0 PID: 559726 Comm: kworker/0:92 Kdump: loaded Tainted: G\nHardware name: Alibaba Cloud Alibaba Cloud ECS, BIOS 449e491 04/01/2014\nWorkqueue: events smc_ib_port_event_work [smc]\nRIP: 0010:smcr_port_add+0xa6/0xf0 [smc]\nRSP: 0000:ffffa5a2c8f67de0 EFLAGS: 00010297\nRAX: 0000000000000001 RBX: ffff9935e0650000 RCX: 0000000000000000\nRDX: 0000000000000010 RSI: ffff9935e0654290 RDI: ffff9935c8560000\nRBP: 0000000000000000 R08: 0000000000000000 R09: ffff9934c0401918\nR10: 0000000000000000 R11: ffffffffb4a5c278 R12: ffff99364029aae4\nR13: ffff99364029aa00 R14: 00000000ffffffed R15: ffff99364029ab08\nFS: 0000000000000000(0000) GS:ffff994380600000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000000 CR3: 0000000f06a10003 CR4: 0000000002770ef0\nPKRU: 55555554\nCall Trace:\n smc_ib_port_event_work+0x18f/0x380 [smc]\n process_one_work+0x19b/0x340\n worker_thread+0x30/0x370\n ? process_one_work+0x340/0x340\n kthread+0x114/0x130\n ? __kthread_cancel_work+0x50/0x50\n ret_from_fork+0x1f/0x30"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - The vulnerable walk runs from `smc_ib_port_event_work`, which is scheduled by RoCE async events an adjacent attacker can generate \u2014 IPv6 Router Advertisements churn the netdev's addresses into `IB_EVENT_GID_CHANGE`, and a RoCE fabric peer can raise `IB_EVENT_QP_ACCESS_ERR`; the racing link-group add/delete is driven by SMC-R connection setup/teardown from a peer on the same fabric.\nAC:L - The attacker controls both sides of the race \u2014 repeated address/GID churn to re-arm `smcr_port_add()` and rapid SMC-R connection create/teardown to add and free link groups \u2014 and the window spans the entire unlocked list traversal, so the attempt can be repeated indefinitely until it lands.\nPR:N - SMC link groups are created and torn down during the CLC handshake before any application-level authentication, and injecting Router Advertisements or malformed RDMA operations requires no credentials on the target.\nUI:N - Everything is driven by inbound link-layer events and connection churn handled in kernel workqueue context; no local user has to open, mount, or run anything.\nS:U - The corruption is confined to kernel memory managed by the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The unlocked iterator dereferences a `struct smc_link_group` that has already been unlinked and kfree'd, reading `pnet_id`, `type`, `net`, and `lnk[]` out of reallocated slab memory and following freed/reused `list` pointers, which is an attacker-influenceable kernel memory read.\nI:H - Reaching `smc_llc_add_link_local()` on the freed link leads to `smc_llc_enqueue()`, which takes a spinlock in freed memory, performs `list_add_tail()` into the freed `lgr->llc_event_q` (a write into reclaimed slab), and calls `queue_work()` on a freed `work_struct` \u2014 a use-after-free write usable for control-flow hijack after heap grooming.\nA:H - The bug is a confirmed production kernel oops \u2014 NULL pointer dereference at `smcr_port_add+0xa6` in `smc_ib_port_event_work` \u2014 and any use-after-free on the link-group list reliably panics the machine."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/smc/smc_core.c"], "versions": [{"version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "lessThan": "d1c6c93c27a4bf48006ab16cd9b38d85559d7645", "status": "affected", "versionType": "git"}, {"version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "lessThan": "06b4934ab2b534bb92935c7601852066ebb9eab8", "status": "affected", "versionType": "git"}, {"version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "lessThan": "70c8d17007dc4a07156b7da44509527990e569b3", "status": "affected", "versionType": "git"}, {"version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "lessThan": "b717463610a27fc0b58484cfead7a623d5913e61", "status": "affected", "versionType": "git"}, {"version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "lessThan": "f5146e3ef0a9eea405874b36178c19a4863b8989", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/smc/smc_core.c"], "versions": [{"version": "5.8", "status": "affected"}, {"version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.195", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.132", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.54", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.5.4", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6", "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": "5.8", "versionEndExcluding": "5.10.195"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "5.15.132"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.1.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.5.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d1c6c93c27a4bf48006ab16cd9b38d85559d7645"}, {"url": "https://git.kernel.org/stable/c/06b4934ab2b534bb92935c7601852066ebb9eab8"}, {"url": "https://git.kernel.org/stable/c/70c8d17007dc4a07156b7da44509527990e569b3"}, {"url": "https://git.kernel.org/stable/c/b717463610a27fc0b58484cfead7a623d5913e61"}, {"url": "https://git.kernel.org/stable/c/f5146e3ef0a9eea405874b36178c19a4863b8989"}], "title": "net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-54318", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:40:19.800545Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:41:44.789Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-54318", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:40:19.800545Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:40:20.329Z"}}], "cna": {"title": "net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 8.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:A - The vulnerable walk runs from `smc_ib_port_event_work`, which is scheduled by RoCE async events an adjacent attacker can generate \u2014 IPv6 Router Advertisements churn the netdev's addresses into `IB_EVENT_GID_CHANGE`, and a RoCE fabric peer can raise `IB_EVENT_QP_ACCESS_ERR`; the racing link-group add/delete is driven by SMC-R connection setup/teardown from a peer on the same fabric.\nAC:L - The attacker controls both sides of the race \u2014 repeated address/GID churn to re-arm `smcr_port_add()` and rapid SMC-R connection create/teardown to add and free link groups \u2014 and the window spans the entire unlocked list traversal, so the attempt can be repeated indefinitely until it lands.\nPR:N - SMC link groups are created and torn down during the CLC handshake before any application-level authentication, and injecting Router Advertisements or malformed RDMA operations requires no credentials on the target.\nUI:N - Everything is driven by inbound link-layer events and connection churn handled in kernel workqueue context; no local user has to open, mount, or run anything.\nS:U - The corruption is confined to kernel memory managed by the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The unlocked iterator dereferences a `struct smc_link_group` that has already been unlinked and kfree'd, reading `pnet_id`, `type`, `net`, and `lnk[]` out of reallocated slab memory and following freed/reused `list` pointers, which is an attacker-influenceable kernel memory read.\nI:H - Reaching `smc_llc_add_link_local()` on the freed link leads to `smc_llc_enqueue()`, which takes a spinlock in freed memory, performs `list_add_tail()` into the freed `lgr->llc_event_q` (a write into reclaimed slab), and calls `queue_work()` on a freed `work_struct` \u2014 a use-after-free write usable for control-flow hijack after heap grooming.\nA:H - The bug is a confirmed production kernel oops \u2014 NULL pointer dereference at `smcr_port_add+0xa6` in `smc_ib_port_event_work` \u2014 and any use-after-free on the link-group list reliably panics the machine."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "lessThan": "d1c6c93c27a4bf48006ab16cd9b38d85559d7645", "versionType": "git"}, {"status": "affected", "version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "lessThan": "06b4934ab2b534bb92935c7601852066ebb9eab8", "versionType": "git"}, {"status": "affected", "version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "lessThan": "70c8d17007dc4a07156b7da44509527990e569b3", "versionType": "git"}, {"status": "affected", "version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "lessThan": "b717463610a27fc0b58484cfead7a623d5913e61", "versionType": "git"}, {"status": "affected", "version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "lessThan": "f5146e3ef0a9eea405874b36178c19a4863b8989", "versionType": "git"}], "programFiles": ["net/smc/smc_core.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.8"}, {"status": "unaffected", "version": "0", "lessThan": "5.8", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.195", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.132", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.54", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.5.4", "versionType": "semver", "lessThanOrEqual": "6.5.*"}, {"status": "unaffected", "version": "6.6", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/smc/smc_core.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/d1c6c93c27a4bf48006ab16cd9b38d85559d7645"}, {"url": "https://git.kernel.org/stable/c/06b4934ab2b534bb92935c7601852066ebb9eab8"}, {"url": "https://git.kernel.org/stable/c/70c8d17007dc4a07156b7da44509527990e569b3"}, {"url": "https://git.kernel.org/stable/c/b717463610a27fc0b58484cfead7a623d5913e61"}, {"url": "https://git.kernel.org/stable/c/f5146e3ef0a9eea405874b36178c19a4863b8989"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add\n\nWhile doing smcr_port_add, there maybe linkgroup add into or delete\nfrom smc_lgr_list.list at the same time, which may result kernel crash.\nSo, use smc_lgr_list.lock to protect smc_lgr_list.list iterate in\nsmcr_port_add.\n\nThe crash calltrace show below:\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nPGD 0 P4D 0\nOops: 0000 [#1] SMP NOPTI\nCPU: 0 PID: 559726 Comm: kworker/0:92 Kdump: loaded Tainted: G\nHardware name: Alibaba Cloud Alibaba Cloud ECS, BIOS 449e491 04/01/2014\nWorkqueue: events smc_ib_port_event_work [smc]\nRIP: 0010:smcr_port_add+0xa6/0xf0 [smc]\nRSP: 0000:ffffa5a2c8f67de0 EFLAGS: 00010297\nRAX: 0000000000000001 RBX: ffff9935e0650000 RCX: 0000000000000000\nRDX: 0000000000000010 RSI: ffff9935e0654290 RDI: ffff9935c8560000\nRBP: 0000000000000000 R08: 0000000000000000 R09: ffff9934c0401918\nR10: 0000000000000000 R11: ffffffffb4a5c278 R12: ffff99364029aae4\nR13: ffff99364029aa00 R14: 00000000ffffffed R15: ffff99364029ab08\nFS: 0000000000000000(0000) GS:ffff994380600000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000000 CR3: 0000000f06a10003 CR4: 0000000002770ef0\nPKRU: 55555554\nCall Trace:\n smc_ib_port_event_work+0x18f/0x380 [smc]\n process_one_work+0x19b/0x340\n worker_thread+0x30/0x370\n ? process_one_work+0x340/0x340\n kthread+0x114/0x130\n ? __kthread_cancel_work+0x50/0x50\n ret_from_fork+0x1f/0x30"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.195", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.132", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.54", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.5.4", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6", "versionStartIncluding": "5.8"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:19:14.490Z"}}}, "cveMetadata": {"cveId": "CVE-2023-54318", "state": "PUBLISHED", "dateUpdated": "2026-10-15T21:41:44.789Z", "dateReserved": "2025-12-30T12:06:44.531Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-12-30T12:23:48.134Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/smc/smc_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d1c6c93c27a4bf48006ab16cd9b38d85559d7645", "status": "affected", "version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "versionType": "git"}, {"lessThan": "06b4934ab2b534bb92935c7601852066ebb9eab8", "status": "affected", "version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "versionType": "git"}, {"lessThan": "70c8d17007dc4a07156b7da44509527990e569b3", "status": "affected", "version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "versionType": "git"}, {"lessThan": "b717463610a27fc0b58484cfead7a623d5913e61", "status": "affected", "version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "versionType": "git"}, {"lessThan": "f5146e3ef0a9eea405874b36178c19a4863b8989", "status": "affected", "version": "1f90a05d9ff907c70456e7c9d7058372679a88c6", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/smc/smc_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.8"}, {"lessThan": "5.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.195", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.132", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.54", "versionType": "semver"}, {"lessThanOrEqual": "6.5.*", "status": "unaffected", "version": "6.5.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.6", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add\n\nWhile doing smcr_port_add, there maybe linkgroup add into or delete\nfrom smc_lgr_list.list at the same time, which may result kernel crash.\nSo, use smc_lgr_list.lock to protect smc_lgr_list.list iterate in\nsmcr_port_add.\n\nThe crash calltrace show below:\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nPGD 0 P4D 0\nOops: 0000 [#1] SMP NOPTI\nCPU: 0 PID: 559726 Comm: kworker/0:92 Kdump: loaded Tainted: G\nHardware name: Alibaba Cloud Alibaba Cloud ECS, BIOS 449e491 04/01/2014\nWorkqueue: events smc_ib_port_event_work [smc]\nRIP: 0010:smcr_port_add+0xa6/0xf0 [smc]\nRSP: 0000:ffffa5a2c8f67de0 EFLAGS: 00010297\nRAX: 0000000000000001 RBX: ffff9935e0650000 RCX: 0000000000000000\nRDX: 0000000000000010 RSI: ffff9935e0654290 RDI: ffff9935c8560000\nRBP: 0000000000000000 R08: 0000000000000000 R09: ffff9934c0401918\nR10: 0000000000000000 R11: ffffffffb4a5c278 R12: ffff99364029aae4\nR13: ffff99364029aa00 R14: 00000000ffffffed R15: ffff99364029ab08\nFS: 0000000000000000(0000) GS:ffff994380600000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000000 CR3: 0000000f06a10003 CR4: 0000000002770ef0\nPKRU: 55555554\nCall Trace:\n smc_ib_port_event_work+0x18f/0x380 [smc]\n process_one_work+0x19b/0x340\n worker_thread+0x30/0x370\n ? process_one_work+0x340/0x340\n kthread+0x114/0x130\n ? __kthread_cancel_work+0x50/0x50\n ret_from_fork+0x1f/0x30"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet/smc: usar smc_lgr_list.lock para proteger la iteraci\u00f3n de smc_lgr_list.list en smcr_port_add\n\nMientras se ejecuta smcr_port_add, puede que se a\u00f1adan o eliminen grupos de enlaces (linkgroup) de smc_lgr_list.list al mismo tiempo, lo que puede resultar en un fallo del kernel. Por lo tanto, usar smc_lgr_list.lock para proteger la iteraci\u00f3n de smc_lgr_list.list en smcr_port_add.\n\nEl rastreo de llamadas del fallo se muestra a continuaci\u00f3n:\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nPGD 0 P4D 0\nOops: 0000 [#1] SMP NOPTI\nCPU: 0 PID: 559726 Comm: kworker/0:92 Kdump: loaded Tainted: G\nHardware name: Alibaba Cloud Alibaba Cloud ECS, BIOS 449e491 04/01/2014\nWorkqueue: events smc_ib_port_event_work [smc]\nRIP: 0010:smcr_port_add+0xa6/0xf0 [smc]\nRSP: 0000:ffffa5a2c8f67de0 EFLAGS: 00010297\nRAX: 0000000000000001 RBX: ffff9935e0650000 RCX: 0000000000000000\nRDX: 0000000000000010 RSI: ffff9935e0654290 RDI: ffff9935c8560000\nRBP: 0000000000000000 R08: 0000000000000000 R09: ffff9934c0401918\nR10: 0000000000000000 R11: ffffffffb4a5c278 R12: ffff99364029aae4\nR13: ffff99364029aa00 R14: 00000000ffffffed R15: ffff99364029ab08\nFS: 0000000000000000(0000) GS:ffff994380600000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000000 CR3: 0000000f06a10003 CR4: 0000000002770ef0\nPKRU: 55555554\nCall Trace:\n smc_ib_port_event_work+0x18f/0x380 [smc]\n process_one_work+0x19b/0x340\n worker_thread+0x30/0x370\n ? process_one_work+0x340/0x340\n kthread+0x114/0x130\n ? __kthread_cancel_work+0x50/0x50\n ret_from_fork+0x1f/0x30"}], "id": "CVE-2023-54318", "lastModified": "2026-10-15T22:17:58.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-54318", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:40:19.800545Z", "version": "2.0.3"}}]}, "published": "2025-12-30T13:16:21.090", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/06b4934ab2b534bb92935c7601852066ebb9eab8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/70c8d17007dc4a07156b7da44509527990e569b3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b717463610a27fc0b58484cfead7a623d5913e61"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d1c6c93c27a4bf48006ab16cd9b38d85559d7645"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f5146e3ef0a9eea405874b36178c19a4863b8989"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add", "id": "2426186", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2426186"}, "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": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2023-54318", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-54318\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-54318\nhttps://lore.kernel.org/linux-cve-announce/2025123038-CVE-2023-54318-bb2a@gregkh/T"], "threat_severity": "Low"}

{}