{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40328","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T07:20:57.186Z","datePublished":"2025-12-09T04:09:44.876Z","dateUpdated":"2026-05-11T21:47:14.357Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:47:14.357Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential UAF in smb2_close_cached_fid()\n\nfind_or_create_cached_dir() could grab a new reference after kref_put()\nhad seen the refcount drop to zero but before cfid_list_lock is acquired\nin smb2_close_cached_fid(), leading to use-after-free.\n\nSwitch to kref_put_lock() so cfid_release() is called with\ncfid_list_lock held, closing that gap."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/client/cached_dir.c"],"versions":[{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","lessThan":"cb52d9c86d70298de0ab7c7953653898cbc0efd6","status":"affected","versionType":"git"},{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","lessThan":"065bd62412271a2d734810dd50336cae88c54427","status":"affected","versionType":"git"},{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","lessThan":"bdb596ceb4b7c3f28786a33840263728217fbcf5","status":"affected","versionType":"git"},{"version":"ebe98f1447bbccf8228335c62d86af02a0ed23f7","lessThan":"734e99623c5b65bf2c03e35978a0b980ebc3c2f8","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/client/cached_dir.c"],"versions":[{"version":"6.1","status":"affected"},{"version":"0","lessThan":"6.1","status":"unaffected","versionType":"semver"},{"version":"6.6.117","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.58","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.17.8","lessThanOrEqual":"6.17.*","status":"unaffected","versionType":"semver"},{"version":"6.18","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":"6.1","versionEndExcluding":"6.6.117"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.12.58"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.17.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.18"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/cb52d9c86d70298de0ab7c7953653898cbc0efd6"},{"url":"https://git.kernel.org/stable/c/065bd62412271a2d734810dd50336cae88c54427"},{"url":"https://git.kernel.org/stable/c/bdb596ceb4b7c3f28786a33840263728217fbcf5"},{"url":"https://git.kernel.org/stable/c/734e99623c5b65bf2c03e35978a0b980ebc3c2f8"}],"title":"smb: client: fix potential UAF in smb2_close_cached_fid()","x_generator":{"engine":"bippy-1.2.0"}}}}