{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-47199", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-25T09:12:14.117Z", "datePublished": "2024-04-10T18:56:34.529Z", "dateUpdated": "2024-11-04T12:01:22.959Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T12:01:22.959Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: CT, Fix multiple allocations and memleak of mod acts\n\nCT clear action offload adds additional mod hdr actions to the\nflow's original mod actions in order to clear the registers which\nhold ct_state.\nWhen such flow also includes encap action, a neigh update event\ncan cause the driver to unoffload the flow and then reoffload it.\n\nEach time this happens, the ct clear handling adds that same set\nof mod hdr actions to reset ct_state until the max of mod hdr\nactions is reached.\n\nAlso the driver never releases the allocated mod hdr actions and\ncausing a memleak.\n\nFix above two issues by moving CT clear mod acts allocation\ninto the parsing actions phase and only use it when offloading the rule.\nThe release of mod acts will be done in the normal flow_put().\n\n backtrace:\n [<000000007316e2f3>] krealloc+0x83/0xd0\n [<00000000ef157de1>] mlx5e_mod_hdr_alloc+0x147/0x300 [mlx5_core]\n [<00000000970ce4ae>] mlx5e_tc_match_to_reg_set_and_get_id+0xd7/0x240 [mlx5_core]\n [<0000000067c5fa17>] mlx5e_tc_match_to_reg_set+0xa/0x20 [mlx5_core]\n [<00000000d032eb98>] mlx5_tc_ct_entry_set_registers.isra.0+0x36/0xc0 [mlx5_core]\n [<00000000fd23b869>] mlx5_tc_ct_flow_offload+0x272/0x1f10 [mlx5_core]\n [<000000004fc24acc>] mlx5e_tc_offload_fdb_rules.part.0+0x150/0x620 [mlx5_core]\n [<00000000dc741c17>] mlx5e_tc_encap_flows_add+0x489/0x690 [mlx5_core]\n [<00000000e92e49d7>] mlx5e_rep_update_flows+0x6e4/0x9b0 [mlx5_core]\n [<00000000f60f5602>] mlx5e_rep_neigh_update+0x39a/0x5d0 [mlx5_core]"}], "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/mlx5/core/en/tc_ct.c", "drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.h", "drivers/net/ethernet/mellanox/mlx5/core/en_tc.c"], "versions": [{"version": "1ef3018f5af3", "lessThan": "486e8de6e233", "status": "affected", "versionType": "git"}, {"version": "1ef3018f5af3", "lessThan": "806401c20a0f", "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/mlx5/core/en/tc_ct.c", "drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.h", "drivers/net/ethernet/mellanox/mlx5/core/en_tc.c"], "versions": [{"version": "5.7", "status": "affected"}, {"version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.5", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.16", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/486e8de6e233ff2999493533c6259d1cb538653b"}, {"url": "https://git.kernel.org/stable/c/806401c20a0f9c51b6c8fd7035671e6ca841f6c2"}], "title": "net/mlx5e: CT, Fix multiple allocations and memleak of mod acts", "x_generator": {"engine": "bippy-9e1c9544281a"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:07.447Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/486e8de6e233ff2999493533c6259d1cb538653b", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/806401c20a0f9c51b6c8fd7035671e6ca841f6c2", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47199", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:50:01.719714Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:37.887Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/486e8de6e233ff2999493533c6259d1cb538653b", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/806401c20a0f9c51b6c8fd7035671e6ca841f6c2", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:07.447Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47199", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:50:01.719714Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:17.754Z"}}], "cna": {"title": "net/mlx5e: CT, Fix multiple allocations and memleak of mod acts", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1ef3018f5af3", "lessThan": "486e8de6e233", "versionType": "git"}, {"status": "affected", "version": "1ef3018f5af3", "lessThan": "806401c20a0f", "versionType": "git"}], "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c", "drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.h", "drivers/net/ethernet/mellanox/mlx5/core/en_tc.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"status": "unaffected", "version": "0", "lessThan": "5.7", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.5", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "5.16", "versionType": "semver", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c", "drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.h", "drivers/net/ethernet/mellanox/mlx5/core/en_tc.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/486e8de6e233ff2999493533c6259d1cb538653b"}, {"url": "https://git.kernel.org/stable/c/806401c20a0f9c51b6c8fd7035671e6ca841f6c2"}], "x_generator": {"engine": "bippy-c8e10e5f6187"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: CT, Fix multiple allocations and memleak of mod acts\n\nCT clear action offload adds additional mod hdr actions to the\nflow's original mod actions in order to clear the registers which\nhold ct_state.\nWhen such flow also includes encap action, a neigh update event\ncan cause the driver to unoffload the flow and then reoffload it.\n\nEach time this happens, the ct clear handling adds that same set\nof mod hdr actions to reset ct_state until the max of mod hdr\nactions is reached.\n\nAlso the driver never releases the allocated mod hdr actions and\ncausing a memleak.\n\nFix above two issues by moving CT clear mod acts allocation\ninto the parsing actions phase and only use it when offloading the rule.\nThe release of mod acts will be done in the normal flow_put().\n\n backtrace:\n [<000000007316e2f3>] krealloc+0x83/0xd0\n [<00000000ef157de1>] mlx5e_mod_hdr_alloc+0x147/0x300 [mlx5_core]\n [<00000000970ce4ae>] mlx5e_tc_match_to_reg_set_and_get_id+0xd7/0x240 [mlx5_core]\n [<0000000067c5fa17>] mlx5e_tc_match_to_reg_set+0xa/0x20 [mlx5_core]\n [<00000000d032eb98>] mlx5_tc_ct_entry_set_registers.isra.0+0x36/0xc0 [mlx5_core]\n [<00000000fd23b869>] mlx5_tc_ct_flow_offload+0x272/0x1f10 [mlx5_core]\n [<000000004fc24acc>] mlx5e_tc_offload_fdb_rules.part.0+0x150/0x620 [mlx5_core]\n [<00000000dc741c17>] mlx5e_tc_encap_flows_add+0x489/0x690 [mlx5_core]\n [<00000000e92e49d7>] mlx5e_rep_update_flows+0x6e4/0x9b0 [mlx5_core]\n [<00000000f60f5602>] mlx5e_rep_neigh_update+0x39a/0x5d0 [mlx5_core]"}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T11:36:40.527Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47199", "state": "PUBLISHED", "dateUpdated": "2024-11-04T11:36:40.527Z", "dateReserved": "2024-03-25T09:12:14.117Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-04-10T18:56:34.529Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: CT, Fix multiple allocations and memleak of mod acts\n\nCT clear action offload adds additional mod hdr actions to the\nflow's original mod actions in order to clear the registers which\nhold ct_state.\nWhen such flow also includes encap action, a neigh update event\ncan cause the driver to unoffload the flow and then reoffload it.\n\nEach time this happens, the ct clear handling adds that same set\nof mod hdr actions to reset ct_state until the max of mod hdr\nactions is reached.\n\nAlso the driver never releases the allocated mod hdr actions and\ncausing a memleak.\n\nFix above two issues by moving CT clear mod acts allocation\ninto the parsing actions phase and only use it when offloading the rule.\nThe release of mod acts will be done in the normal flow_put().\n\n backtrace:\n [<000000007316e2f3>] krealloc+0x83/0xd0\n [<00000000ef157de1>] mlx5e_mod_hdr_alloc+0x147/0x300 [mlx5_core]\n [<00000000970ce4ae>] mlx5e_tc_match_to_reg_set_and_get_id+0xd7/0x240 [mlx5_core]\n [<0000000067c5fa17>] mlx5e_tc_match_to_reg_set+0xa/0x20 [mlx5_core]\n [<00000000d032eb98>] mlx5_tc_ct_entry_set_registers.isra.0+0x36/0xc0 [mlx5_core]\n [<00000000fd23b869>] mlx5_tc_ct_flow_offload+0x272/0x1f10 [mlx5_core]\n [<000000004fc24acc>] mlx5e_tc_offload_fdb_rules.part.0+0x150/0x620 [mlx5_core]\n [<00000000dc741c17>] mlx5e_tc_encap_flows_add+0x489/0x690 [mlx5_core]\n [<00000000e92e49d7>] mlx5e_rep_update_flows+0x6e4/0x9b0 [mlx5_core]\n [<00000000f60f5602>] mlx5e_rep_neigh_update+0x39a/0x5d0 [mlx5_core]"}], "id": "CVE-2021-47199", "lastModified": "2024-04-10T19:49:51.183", "metrics": {}, "published": "2024-04-10T19:15:48.037", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/486e8de6e233ff2999493533c6259d1cb538653b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/806401c20a0f9c51b6c8fd7035671e6ca841f6c2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: net/mlx5e: CT, Fix multiple allocations and memleak of mod acts", "id": "2274610", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2274610"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H", "status": "draft"}, "cwe": "CWE-402", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/mlx5e: CT, Fix multiple allocations and memleak of mod acts\nCT clear action offload adds additional mod hdr actions to the\nflow's original mod actions in order to clear the registers which\nhold ct_state.\nWhen such flow also includes encap action, a neigh update event\ncan cause the driver to unoffload the flow and then reoffload it.\nEach time this happens, the ct clear handling adds that same set\nof mod hdr actions to reset ct_state until the max of mod hdr\nactions is reached.\nAlso the driver never releases the allocated mod hdr actions and\ncausing a memleak.\nFix above two issues by moving CT clear mod acts allocation\ninto the parsing actions phase and only use it when offloading the rule.\nThe release of mod acts will be done in the normal flow_put().\nbacktrace:\n[<000000007316e2f3>] krealloc+0x83/0xd0\n[<00000000ef157de1>] mlx5e_mod_hdr_alloc+0x147/0x300 [mlx5_core]\n[<00000000970ce4ae>] mlx5e_tc_match_to_reg_set_and_get_id+0xd7/0x240 [mlx5_core]\n[<0000000067c5fa17>] mlx5e_tc_match_to_reg_set+0xa/0x20 [mlx5_core]\n[<00000000d032eb98>] mlx5_tc_ct_entry_set_registers.isra.0+0x36/0xc0 [mlx5_core]\n[<00000000fd23b869>] mlx5_tc_ct_flow_offload+0x272/0x1f10 [mlx5_core]\n[<000000004fc24acc>] mlx5e_tc_offload_fdb_rules.part.0+0x150/0x620 [mlx5_core]\n[<00000000dc741c17>] mlx5e_tc_encap_flows_add+0x489/0x690 [mlx5_core]\n[<00000000e92e49d7>] mlx5e_rep_update_flows+0x6e4/0x9b0 [mlx5_core]\n[<00000000f60f5602>] mlx5e_rep_neigh_update+0x39a/0x5d0 [mlx5_core]"], "name": "CVE-2021-47199", "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:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47199\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47199\nhttps://lore.kernel.org/linux-cve-announce/2024041036-CVE-2021-47199-604a@gregkh/T"], "threat_severity": "Low", "upstream_fix": "kernel 5.15.5, kernel 5.16"}