{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74522", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.911Z", "datePublished": "2026-08-15T12:27:39.945Z", "dateUpdated": "2026-08-15T12:27:39.945Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-15T12:27:39.945Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix use-after-free in __close_file_table_ids()\n\nA ksmbd_file can remain alive after logical close while another session\nholds a temporary reference obtained through ksmbd_lookup_fd_inode().\nksmbd_close_fd() currently marks the file closed and drops the idr-owned\nreference, but leaves the pointer published in the closing session's idr\nuntil the final reference is dropped.\n\nIf the foreign holder performs the final ksmbd_fd_put(), __put_fd_final()\nsupplies the foreign session's file table to __ksmbd_close_fd(). The object\nis then freed without being removed from its owner's idr, and the owner\nsession later dereferences the stale pointer during file-table teardown.\n\nRemove the volatile id from the owner's idr while ksmbd_close_fd() still\nholds that table's lock, and clear volatile_id before dropping\nthe idr-owned reference. A later foreign final put then only performs\nphysical destruction and cannot remove the object from the wrong table."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/server/vfs_cache.c"], "versions": [{"version": "8510a043d334ecdf83d4604782f288db6bf21d60", "lessThan": "67aaec2a1fdce3e1dde46c45b5d1ef8cf22f65cd", "status": "affected", "versionType": "git"}, {"version": "8510a043d334ecdf83d4604782f288db6bf21d60", "lessThan": "0c3918c2cee62ec6c9de8d5c73ebfe6f833961ac", "status": "affected", "versionType": "git"}, {"version": "8510a043d334ecdf83d4604782f288db6bf21d60", "lessThan": "9be4a66f019ea90bd9deca70511f4f9ffebf5c6f", "status": "affected", "versionType": "git"}, {"version": "8510a043d334ecdf83d4604782f288db6bf21d60", "lessThan": "cffbdc86393b0235383a20c8c59bc32f16036459", "status": "affected", "versionType": "git"}, {"version": "8510a043d334ecdf83d4604782f288db6bf21d60", "lessThan": "e7188199eff46a636f3436356f0aae039be6dd66", "status": "affected", "versionType": "git"}, {"version": "df30cbfd3d8a70e61ce59f63ce5ed2261799ac10", "status": "affected", "versionType": "git"}, {"version": "aaf1d5ebb358f546414965b39da90107a7ca7ce5", "status": "affected", "versionType": "git"}, {"version": "5.15.38", "lessThan": "5.16", "status": "affected", "versionType": "semver"}, {"version": "5.17.6", "lessThan": "5.18", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/server/vfs_cache.c"], "versions": [{"version": "5.18", "status": "affected"}, {"version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.151", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.103", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.44", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.8", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc6", "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": "5.18", "versionEndExcluding": "6.6.151"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.12.103"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.18.44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "7.1.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "7.2-rc6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.38"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17.6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/67aaec2a1fdce3e1dde46c45b5d1ef8cf22f65cd"}, {"url": "https://git.kernel.org/stable/c/0c3918c2cee62ec6c9de8d5c73ebfe6f833961ac"}, {"url": "https://git.kernel.org/stable/c/9be4a66f019ea90bd9deca70511f4f9ffebf5c6f"}, {"url": "https://git.kernel.org/stable/c/cffbdc86393b0235383a20c8c59bc32f16036459"}, {"url": "https://git.kernel.org/stable/c/e7188199eff46a636f3436356f0aae039be6dd66"}], "title": "ksmbd: fix use-after-free in __close_file_table_ids()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/smb/server/vfs_cache.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "67aaec2a1fdce3e1dde46c45b5d1ef8cf22f65cd", "status": "affected", "version": "8510a043d334ecdf83d4604782f288db6bf21d60", "versionType": "git"}, {"lessThan": "0c3918c2cee62ec6c9de8d5c73ebfe6f833961ac", "status": "affected", "version": "8510a043d334ecdf83d4604782f288db6bf21d60", "versionType": "git"}, {"lessThan": "9be4a66f019ea90bd9deca70511f4f9ffebf5c6f", "status": "affected", "version": "8510a043d334ecdf83d4604782f288db6bf21d60", "versionType": "git"}, {"lessThan": "cffbdc86393b0235383a20c8c59bc32f16036459", "status": "affected", "version": "8510a043d334ecdf83d4604782f288db6bf21d60", "versionType": "git"}, {"lessThan": "e7188199eff46a636f3436356f0aae039be6dd66", "status": "affected", "version": "8510a043d334ecdf83d4604782f288db6bf21d60", "versionType": "git"}, {"status": "affected", "version": "df30cbfd3d8a70e61ce59f63ce5ed2261799ac10", "versionType": "git"}, {"status": "affected", "version": "aaf1d5ebb358f546414965b39da90107a7ca7ce5", "versionType": "git"}, {"lessThan": "5.16", "status": "affected", "version": "5.15.38", "versionType": "semver"}, {"lessThan": "5.18", "status": "affected", "version": "5.17.6", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/smb/server/vfs_cache.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.18"}, {"lessThan": "5.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.151", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.103", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.44", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc6", "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: fix use-after-free in __close_file_table_ids()\n\nA ksmbd_file can remain alive after logical close while another session\nholds a temporary reference obtained through ksmbd_lookup_fd_inode().\nksmbd_close_fd() currently marks the file closed and drops the idr-owned\nreference, but leaves the pointer published in the closing session's idr\nuntil the final reference is dropped.\n\nIf the foreign holder performs the final ksmbd_fd_put(), __put_fd_final()\nsupplies the foreign session's file table to __ksmbd_close_fd(). The object\nis then freed without being removed from its owner's idr, and the owner\nsession later dereferences the stale pointer during file-table teardown.\n\nRemove the volatile id from the owner's idr while ksmbd_close_fd() still\nholds that table's lock, and clear volatile_id before dropping\nthe idr-owned reference. A later foreign final put then only performs\nphysical destruction and cannot remove the object from the wrong table."}], "id": "CVE-2026-74522", "lastModified": "2026-08-15T13:17:57.433", "metrics": {}, "published": "2026-08-15T13:17:57.433", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0c3918c2cee62ec6c9de8d5c73ebfe6f833961ac"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/67aaec2a1fdce3e1dde46c45b5d1ef8cf22f65cd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9be4a66f019ea90bd9deca70511f4f9ffebf5c6f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cffbdc86393b0235383a20c8c59bc32f16036459"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e7188199eff46a636f3436356f0aae039be6dd66"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{}