{"id":"CVE-2025-37954","revision":null,"records":[{"revision":"a13aeaa125124f85865972d8a1f7ae42","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-37954","aliases":[],"title":"smb: client: Avoid race in open_cached_dir with lease breaks","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: Avoid race in open_cached_dir with lease breaks\n\nA pre-existing valid cfid returned from find_or_create_cached_dir might\nrace with a lease break, meaning open_cached_dir doesn't consider it\nvalid, and thinks it's newly-constructed. This leaks a dentry reference\nif the allocation occurs before the queued lease break work runs.\n\nAvoid the race by extending holding the cfid_list_lock across\nfind_or_create_cached_dir and when the result is checked.","state":0,"publishedAt":"2025-05-20T16:01:48.561+00:00","modifiedAt":"2026-10-15T21:52:05.057+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/smb/client/cached_dir.c\"\n ],\n \"versions\": [\n {\n \"version\": \"81ba10959970d15c388bf29866b01b62f387e6a3\",\n \"lessThan\": \"2ed98e89ebc2e1bc73534dc3c18cb7843a889ff9\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"81ba10959970d15c388bf29866b01b62f387e6a3\",\n \"lessThan\": \"571dcf3d27b24800c171aea7b5e04ff06d10e2e9\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"81ba10959970d15c388bf29866b01b62f387e6a3\",\n \"lessThan\": \"2407265dc32bc8cc45b62a612c2a214ba9038e8b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"81ba10959970d15c388bf29866b01b62f387e6a3\",\n \"lessThan\": \"3ca02e63edccb78ef3659bebc68579c7224a6ca2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"436be190fbf81e5d84040dabf9cb7be06a94dc5d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6.5.10\",\n \"lessThan\": \"6.6\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/smb/client/cached_dir.c\"\n ],\n \"versions\": [\n {\n \"version\": \"6.6\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"6.6\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.91\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.29\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.14.7\",\n \"lessThanOrEqual\": \"6.14.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.15\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/2ed98e89ebc2e1bc73534dc3c18cb7843a889ff9","https://git.kernel.org/stable/c/571dcf3d27b24800c171aea7b5e04ff06d10e2e9","https://git.kernel.org/stable/c/2407265dc32bc8cc45b62a612c2a214ba9038e8b","https://git.kernel.org/stable/c/3ca02e63edccb78ef3659bebc68579c7224a6ca2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-37954","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-37954","identifiers":["CVE-2025-37954"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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