{"schema":"threatline.record/2","record":{"id":"CVE-2026-97561","aliases":[],"summary":"smb: client: honor forceuid/forcegid when mapping SIDs to uid/gid","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: honor forceuid/forcegid when mapping SIDs to uid/gid\n\nWhen the administrator mounts with forceuid or forcegid (uid=/gid=\nmount options), they expect all files to appear owned by the specified\nuser/group.  However, several code paths unconditionally called\nsid_to_id() to overwrite cf_uid/cf_gid with server-provided values,\nignoring the administrator's explicit override:\n\n  - smb311_posix_info_to_fattr() (stat via POSIX extensions)\n  - cifs_posix_to_fattr() (readdir via POSIX extensions)\n  - parse_sec_desc() (CIFS ACL ownership mapping)\n\nThis allowed an untrusted server to dictate local file ownership even\nwhen the mount was configured to force specific uid/gid values.\n\nFix all three call sites to check CIFS_MOUNT_OVERR_UID and\nCIFS_MOUNT_OVERR_GID before calling sid_to_id(), following the\nsame pattern already used by cifs_unix_basic_to_fattr() for unix\nextensions.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97561","source_modified_at":"2026-10-21T12:53:18.151Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"9409ae58e0759d010b347e7b19ebc90ab5d4b98f","lessThan":"be6eccccec867c22d7c65fab4ea4e91ec3d5b8c6","status":"affected","versionType":"git"},{"version":"9409ae58e0759d010b347e7b19ebc90ab5d4b98f","lessThan":"bc35de451c128d399ad185d6269f8847e97cd1c9","status":"affected","versionType":"git"},{"version":"9409ae58e0759d010b347e7b19ebc90ab5d4b98f","lessThan":"6ac7a29691558bed18e2df1780636b8aa0fd13d5","status":"affected","versionType":"git"},{"version":"9409ae58e0759d010b347e7b19ebc90ab5d4b98f","lessThan":"e1b74f8f8c1d13190b09fe623b729d36b7ac22a8","status":"affected","versionType":"git"},{"version":"9409ae58e0759d010b347e7b19ebc90ab5d4b98f","lessThan":"18a72975e9f35aadecc75b031f693f2d1f49308f","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97561","source_modified_at":"2026-10-21T12:53:18.151Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"3.0","status":"affected"},{"version":"0","lessThan":"3.0","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":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97561","source_modified_at":"2026-10-21T12:53:18.151Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6ac7a29691558bed18e2df1780636b8aa0fd13d5","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97561","source_modified_at":"2026-10-21T12:53:18.151Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"18a72975e9f35aadecc75b031f693f2d1f49308f","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.09318,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:21:50.067Z","modified_at":"2026-10-21T12:53:18.151Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97561","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:53:18.151Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97561","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/be6eccccec867c22d7c65fab4ea4e91ec3d5b8c6"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/bc35de451c128d399ad185d6269f8847e97cd1c9"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6ac7a29691558bed18e2df1780636b8aa0fd13d5"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e1b74f8f8c1d13190b09fe623b729d36b7ac22a8"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/18a72975e9f35aadecc75b031f693f2d1f49308f"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-21T12:53:18.151Z","content_hash":"294f79cd3c6ee425915a12f78f380924fd07eda0065514aaf65827996d3dc594"}}