{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98015", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:19:56.069Z", "datePublished": "2026-09-25T10:23:37.724Z", "dateUpdated": "2026-09-25T10:23:37.724Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-25T10:23:37.724Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put\n\nIn mlx5_eswitch_termtbl_put(), the zero-ref cleanup check reads\ntt->ref_count after termtbl_mutex has been released. Two concurrent\ncallers on the same mlx5_termtbl_handle race: one decrements ref_count\nto zero, removes the hash entry, and calls kfree(tt) while the other\nhas already dropped the mutex and is about to evaluate\nif (!tt->ref_count), producing a use-after-free.\n\nFix this by capturing the result of the decrement into a stack-local\nlast variable before dropping the mutex. The cleanup decision is now\nmade entirely under termtbl_mutex, and tt is not touched after\nkfree."}], "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/eswitch_offloads_termtbl.c"], "versions": [{"version": "10caabdaad5ace85577a453da97d1f8d3b944427", "lessThan": "304ea40ef4561671503c36e47da44a0a31b71e36", "status": "affected", "versionType": "git"}, {"version": "10caabdaad5ace85577a453da97d1f8d3b944427", "lessThan": "e393789e92310d7c66f57c876101779c90816a12", "status": "affected", "versionType": "git"}, {"version": "10caabdaad5ace85577a453da97d1f8d3b944427", "lessThan": "18b2969073879b9cce24e1a78b118bdad54518d1", "status": "affected", "versionType": "git"}, {"version": "10caabdaad5ace85577a453da97d1f8d3b944427", "lessThan": "7ee07f601f8f507c9faf25c68a49396ab8950596", "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/eswitch_offloads_termtbl.c"], "versions": [{"version": "5.3", "status": "affected"}, {"version": "0", "lessThan": "5.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3-rc3", "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": "5.3", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.3-rc3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/304ea40ef4561671503c36e47da44a0a31b71e36"}, {"url": "https://git.kernel.org/stable/c/e393789e92310d7c66f57c876101779c90816a12"}, {"url": "https://git.kernel.org/stable/c/18b2969073879b9cce24e1a78b118bdad54518d1"}, {"url": "https://git.kernel.org/stable/c/7ee07f601f8f507c9faf25c68a49396ab8950596"}], "title": "net/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "304ea40ef4561671503c36e47da44a0a31b71e36", "status": "affected", "version": "10caabdaad5ace85577a453da97d1f8d3b944427", "versionType": "git"}, {"lessThan": "e393789e92310d7c66f57c876101779c90816a12", "status": "affected", "version": "10caabdaad5ace85577a453da97d1f8d3b944427", "versionType": "git"}, {"lessThan": "18b2969073879b9cce24e1a78b118bdad54518d1", "status": "affected", "version": "10caabdaad5ace85577a453da97d1f8d3b944427", "versionType": "git"}, {"lessThan": "7ee07f601f8f507c9faf25c68a49396ab8950596", "status": "affected", "version": "10caabdaad5ace85577a453da97d1f8d3b944427", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.3"}, {"lessThan": "5.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc3", "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/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put\n\nIn mlx5_eswitch_termtbl_put(), the zero-ref cleanup check reads\ntt->ref_count after termtbl_mutex has been released. Two concurrent\ncallers on the same mlx5_termtbl_handle race: one decrements ref_count\nto zero, removes the hash entry, and calls kfree(tt) while the other\nhas already dropped the mutex and is about to evaluate\nif (!tt->ref_count), producing a use-after-free.\n\nFix this by capturing the result of the decrement into a stack-local\nlast variable before dropping the mutex. The cleanup decision is now\nmade entirely under termtbl_mutex, and tt is not touched after\nkfree."}], "id": "CVE-2026-98015", "lastModified": "2026-09-25T11:17:29.927", "metrics": {}, "published": "2026-09-25T11:17:29.927", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/18b2969073879b9cce24e1a78b118bdad54518d1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/304ea40ef4561671503c36e47da44a0a31b71e36"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7ee07f601f8f507c9faf25c68a49396ab8950596"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e393789e92310d7c66f57c876101779c90816a12"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"created": "2026-09-25T15:30:06.905227+00:00", "updated": "2026-09-25T15:30:06.905250+00:00", "vendors": [], "weaknesses": ["CWE-416", "CWE-362"]}