CVE-2026-93231

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93231", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T16:02:15.095Z", "datePublished": "2026-09-24T15:29:19.786Z", "dateUpdated": "2026-10-30T12:36:28.057Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:36:28.057Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlockd: fix swapped arguments in nlmsvc_match_ip()\n\nWhen releasing locks by server IP address via /proc/fs/nfsd/unlock_ip,\nnlmsvc_unlock_all_by_ip() calls nlm_traverse_files() with the server\nsockaddr as the opaque @data argument:\n\n\tnlm_traverse_files(server_addr, nlmsvc_match_ip, NULL);\n\nThe match callback is later invoked from nlm_traverse_locks() as:\n\n\tmatch(lockhost, host);\n\nwhere the first argument is the nlm_host that owns the lock, and the\nsecond argument is the @data that was originally passed down (here the\nserver sockaddr). This is the convention every other match callback\nrelies on (nlmsvc_mark_host(), nlmsvc_same_host(), nlmsvc_is_client()):\narg1 is the real nlm_host, arg2 is the caller-supplied reference value.\n\nnlmsvc_match_ip() has had these two arguments reversed ever since the\nunlock-by-IP feature was introduced in commit 4373ea84c84d (\"lockd:\nunlock lockd locks associated with a given server ip\"):\n\n\treturn rpc_cmp_addr(nlm_srcaddr(host), datap);\n\nHere @host is actually the server sockaddr, so nlm_srcaddr(host)\ndereferences a struct sockaddr as a struct nlm_host and reads garbage\nat the offset of h_srcaddr; meanwhile @datap is actually the lock\nowner's nlm_host but is compared as a sockaddr. As a result the\ncomparison practically never matches and locks are not released for the\nrequested IP.\n\nSwap the arguments so the lock owner's source address is compared\nagainst the requested server address:\n\n\treturn rpc_cmp_addr(nlm_srcaddr(datap), (struct sockaddr *)host);\n\n[ cel: fix the misleading typedef parameter names too ]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/lockd/lockd.h", "fs/lockd/svcsubs.c"], "versions": [{"version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "lessThan": "e7124d223c5a2dfb4c1a7b2eea24375edc355a10", "status": "affected", "versionType": "git"}, {"version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "lessThan": "68282cbc197b280711f66c4cf05165f911785bcc", "status": "affected", "versionType": "git"}, {"version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "lessThan": "cfbf21d21aea1a83d5ff38d50466a655e0a6a31d", "status": "affected", "versionType": "git"}, {"version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "lessThan": "4fe2db296c9cd897dd1fe06cc0ae9cbc13beefc5", "status": "affected", "versionType": "git"}, {"version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "lessThan": "d34c2ac447fe0490ede828e0143e2cbcb59e6c77", "status": "affected", "versionType": "git"}, {"version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "lessThan": "0d72e78c9d38d5377a059a4837f82b65b91cdcf6", "status": "affected", "versionType": "git"}, {"version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "lessThan": "21bcb609e0ab1dd60f39ca3498f85808933bcc9f", "status": "affected", "versionType": "git"}, {"version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "lessThan": "b9060689f49dc663e9a3d069c4a65ff63a836e66", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/lockd/lockd.h", "fs/lockd/svcsubs.c"], "versions": [{"version": "2.6.26", "status": "affected"}, {"version": "0", "lessThan": "2.6.26", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.273", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.51", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "2.6.26", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.26", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.26", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.26", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.26", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.26", "versionEndExcluding": "6.18.51"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.26", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.26", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e7124d223c5a2dfb4c1a7b2eea24375edc355a10"}, {"url": "https://git.kernel.org/stable/c/68282cbc197b280711f66c4cf05165f911785bcc"}, {"url": "https://git.kernel.org/stable/c/cfbf21d21aea1a83d5ff38d50466a655e0a6a31d"}, {"url": "https://git.kernel.org/stable/c/4fe2db296c9cd897dd1fe06cc0ae9cbc13beefc5"}, {"url": "https://git.kernel.org/stable/c/d34c2ac447fe0490ede828e0143e2cbcb59e6c77"}, {"url": "https://git.kernel.org/stable/c/0d72e78c9d38d5377a059a4837f82b65b91cdcf6"}, {"url": "https://git.kernel.org/stable/c/21bcb609e0ab1dd60f39ca3498f85808933bcc9f"}, {"url": "https://git.kernel.org/stable/c/b9060689f49dc663e9a3d069c4a65ff63a836e66"}], "title": "lockd: fix swapped arguments in nlmsvc_match_ip()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/lockd/lockd.h", "fs/lockd/svcsubs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "e7124d223c5a2dfb4c1a7b2eea24375edc355a10", "status": "affected", "version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "versionType": "git"}, {"lessThan": "68282cbc197b280711f66c4cf05165f911785bcc", "status": "affected", "version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "versionType": "git"}, {"lessThan": "cfbf21d21aea1a83d5ff38d50466a655e0a6a31d", "status": "affected", "version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "versionType": "git"}, {"lessThan": "4fe2db296c9cd897dd1fe06cc0ae9cbc13beefc5", "status": "affected", "version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "versionType": "git"}, {"lessThan": "d34c2ac447fe0490ede828e0143e2cbcb59e6c77", "status": "affected", "version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "versionType": "git"}, {"lessThan": "0d72e78c9d38d5377a059a4837f82b65b91cdcf6", "status": "affected", "version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "versionType": "git"}, {"lessThan": "21bcb609e0ab1dd60f39ca3498f85808933bcc9f", "status": "affected", "version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "versionType": "git"}, {"lessThan": "b9060689f49dc663e9a3d069c4a65ff63a836e66", "status": "affected", "version": "4373ea84c84d8a96e99d3da99e813d3e36d1bd11", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/lockd/lockd.h", "fs/lockd/svcsubs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.26"}, {"lessThan": "2.6.26", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.273", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.51", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nlockd: fix swapped arguments in nlmsvc_match_ip()\n\nWhen releasing locks by server IP address via /proc/fs/nfsd/unlock_ip,\nnlmsvc_unlock_all_by_ip() calls nlm_traverse_files() with the server\nsockaddr as the opaque @data argument:\n\n\tnlm_traverse_files(server_addr, nlmsvc_match_ip, NULL);\n\nThe match callback is later invoked from nlm_traverse_locks() as:\n\n\tmatch(lockhost, host);\n\nwhere the first argument is the nlm_host that owns the lock, and the\nsecond argument is the @data that was originally passed down (here the\nserver sockaddr). This is the convention every other match callback\nrelies on (nlmsvc_mark_host(), nlmsvc_same_host(), nlmsvc_is_client()):\narg1 is the real nlm_host, arg2 is the caller-supplied reference value.\n\nnlmsvc_match_ip() has had these two arguments reversed ever since the\nunlock-by-IP feature was introduced in commit 4373ea84c84d (\"lockd:\nunlock lockd locks associated with a given server ip\"):\n\n\treturn rpc_cmp_addr(nlm_srcaddr(host), datap);\n\nHere @host is actually the server sockaddr, so nlm_srcaddr(host)\ndereferences a struct sockaddr as a struct nlm_host and reads garbage\nat the offset of h_srcaddr; meanwhile @datap is actually the lock\nowner's nlm_host but is compared as a sockaddr. As a result the\ncomparison practically never matches and locks are not released for the\nrequested IP.\n\nSwap the arguments so the lock owner's source address is compared\nagainst the requested server address:\n\n\treturn rpc_cmp_addr(nlm_srcaddr(datap), (struct sockaddr *)host);\n\n[ cel: fix the misleading typedef parameter names too ]"}], "id": "CVE-2026-93231", "lastModified": "2026-10-30T13:21:00.820", "metrics": {}, "published": "2026-09-24T16:17:18.637", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0d72e78c9d38d5377a059a4837f82b65b91cdcf6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/21bcb609e0ab1dd60f39ca3498f85808933bcc9f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4fe2db296c9cd897dd1fe06cc0ae9cbc13beefc5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/68282cbc197b280711f66c4cf05165f911785bcc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b9060689f49dc663e9a3d069c4a65ff63a836e66"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cfbf21d21aea1a83d5ff38d50466a655e0a6a31d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d34c2ac447fe0490ede828e0143e2cbcb59e6c77"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e7124d223c5a2dfb4c1a7b2eea24375edc355a10"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4373ea84c84d8a96e99d3da99e813d3e36d1bd11,0d72e78c9d38d5377a059a4837f82b65b91cdcf6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4373ea84c84d8a96e99d3da99e813d3e36d1bd11,21bcb609e0ab1dd60f39ca3498f85808933bcc9f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4373ea84c84d8a96e99d3da99e813d3e36d1bd11,b9060689f49dc663e9a3d069c4a65ff63a836e66)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.26"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.26)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.51,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.4,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-25T02:45:06.568965+00:00", "updated": "2026-09-25T12:00:15.930949+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-687"]}