CVE-2026-90156

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90156", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.790Z", "datePublished": "2026-09-17T16:06:48.393Z", "dateUpdated": "2026-10-30T12:34:29.152Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:34:29.152Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: safely discard unregistered deferred locks\n\nWhen vfs_lock_file() defers a lock, smb2_lock() puts its ksmbd_lock on\nrollback_list before allocating and registering the asynchronous work.\nIf either operation fails, rollback assumes that smb_lock->conn is\ninitialized and dereferences NULL. The deferred file_lock also remains\nlinked into the VFS blocked-lock state while it is freed.\n\nKeep the lock off rollback_list until async setup succeeds. On setup\nfailures, explicitly unblock and wake the deferred lock before freeing it\nand its ksmbd wrapper."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/server/smb2pdu.c"], "versions": [{"version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9", "lessThan": "aaa51ac0d934cb4e2ab96e150fccc934e822009b", "status": "affected", "versionType": "git"}, {"version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9", "lessThan": "ecdcfa15b3d799476c685cecd433ebefc93015c8", "status": "affected", "versionType": "git"}, {"version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9", "lessThan": "77413400f083a959724de6f36348c9677ef9873a", "status": "affected", "versionType": "git"}, {"version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9", "lessThan": "52b91bc5253bb83665f3ea70565d0b2487dae643", "status": "affected", "versionType": "git"}, {"version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9", "lessThan": "d09af9a35ff7b77a950b507133d9092aadbfeff4", "status": "affected", "versionType": "git"}, {"version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9", "lessThan": "054bcca4cd9f00719b01f7108b51a2168fb94f15", "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/smb/server/smb2pdu.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "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": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "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": "5.15", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/aaa51ac0d934cb4e2ab96e150fccc934e822009b"}, {"url": "https://git.kernel.org/stable/c/ecdcfa15b3d799476c685cecd433ebefc93015c8"}, {"url": "https://git.kernel.org/stable/c/77413400f083a959724de6f36348c9677ef9873a"}, {"url": "https://git.kernel.org/stable/c/52b91bc5253bb83665f3ea70565d0b2487dae643"}, {"url": "https://git.kernel.org/stable/c/d09af9a35ff7b77a950b507133d9092aadbfeff4"}, {"url": "https://git.kernel.org/stable/c/054bcca4cd9f00719b01f7108b51a2168fb94f15"}], "title": "ksmbd: safely discard unregistered deferred locks", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/smb/server/smb2pdu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "aaa51ac0d934cb4e2ab96e150fccc934e822009b", "status": "affected", "version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9", "versionType": "git"}, {"lessThan": "ecdcfa15b3d799476c685cecd433ebefc93015c8", "status": "affected", "version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9", "versionType": "git"}, {"lessThan": "77413400f083a959724de6f36348c9677ef9873a", "status": "affected", "version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9", "versionType": "git"}, {"lessThan": "52b91bc5253bb83665f3ea70565d0b2487dae643", "status": "affected", "version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9", "versionType": "git"}, {"lessThan": "d09af9a35ff7b77a950b507133d9092aadbfeff4", "status": "affected", "version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9", "versionType": "git"}, {"lessThan": "054bcca4cd9f00719b01f7108b51a2168fb94f15", "status": "affected", "version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/smb/server/smb2pdu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.15"}, {"lessThan": "5.15", "status": "unaffected", "version": "0", "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": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.57", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "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\nksmbd: safely discard unregistered deferred locks\n\nWhen vfs_lock_file() defers a lock, smb2_lock() puts its ksmbd_lock on\nrollback_list before allocating and registering the asynchronous work.\nIf either operation fails, rollback assumes that smb_lock->conn is\ninitialized and dereferences NULL. The deferred file_lock also remains\nlinked into the VFS blocked-lock state while it is freed.\n\nKeep the lock off rollback_list until async setup succeeds. On setup\nfailures, explicitly unblock and wake the deferred lock before freeing it\nand its ksmbd wrapper."}], "id": "CVE-2026-90156", "lastModified": "2026-10-30T13:20:44.157", "metrics": {}, "published": "2026-09-17T17:17:08.717", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/054bcca4cd9f00719b01f7108b51a2168fb94f15"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/52b91bc5253bb83665f3ea70565d0b2487dae643"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/77413400f083a959724de6f36348c9677ef9873a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/aaa51ac0d934cb4e2ab96e150fccc934e822009b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d09af9a35ff7b77a950b507133d9092aadbfeff4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ecdcfa15b3d799476c685cecd433ebefc93015c8"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,d09af9a35ff7b77a950b507133d9092aadbfeff4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,054bcca4cd9f00719b01f7108b51a2168fb94f15)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,7.2.6)"}}], "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": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"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": "2026-09-18T17:45:11.684686+00:00", "updated": "2026-09-20T03:45:12.287382+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476", "CWE-416"]}