{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40285","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T07:20:57.184Z","datePublished":"2025-12-06T21:51:09.590Z","dateUpdated":"2026-05-11T21:46:23.709Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:46:23.709Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: fix possible refcount leak in smb2_sess_setup()\n\nReference count of ksmbd_session will leak when session need reconnect.\nFix this by adding the missing ksmbd_user_session_put()."}],"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":"37a0e2b362b3150317fb6e2139de67b1e29ae5ff","lessThan":"6fc935f798d44a8eb8a5e6659198399fbf57b981","status":"affected","versionType":"git"},{"version":"450a844c045ff0895d41b05a1cbe8febd1acfcfd","lessThan":"e671f9bb97805771380c98de944e2ceab6949188","status":"affected","versionType":"git"},{"version":"a39e31e22a535d47b14656a7d6a893c7f6cf758c","lessThan":"dcc51dfe6ff26b52cac106865a172ac982d78401","status":"affected","versionType":"git"},{"version":"b95629435b84b9ecc0c765995204a4d8a913ed52","lessThan":"d37b2c81c83d6c0d5ca582f4fe73c672983f9e0d","status":"affected","versionType":"git"},{"version":"b95629435b84b9ecc0c765995204a4d8a913ed52","lessThan":"379510a815cb2e64eb0a379cb62295d6ade65df0","status":"affected","versionType":"git"},{"version":"2107ab40629aeabbec369cf34b8cf0f288c3eb1b","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":"6.13","status":"affected"},{"version":"0","lessThan":"6.13","status":"unaffected","versionType":"semver"},{"version":"6.1.159","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.117","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.59","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.17.9","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":"6.1.121","versionEndExcluding":"6.1.159"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.67","versionEndExcluding":"6.6.117"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.6","versionEndExcluding":"6.12.59"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.17.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.176"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/6fc935f798d44a8eb8a5e6659198399fbf57b981"},{"url":"https://git.kernel.org/stable/c/e671f9bb97805771380c98de944e2ceab6949188"},{"url":"https://git.kernel.org/stable/c/dcc51dfe6ff26b52cac106865a172ac982d78401"},{"url":"https://git.kernel.org/stable/c/d37b2c81c83d6c0d5ca582f4fe73c672983f9e0d"},{"url":"https://git.kernel.org/stable/c/379510a815cb2e64eb0a379cb62295d6ade65df0"}],"title":"smb/server: fix possible refcount leak in smb2_sess_setup()","x_generator":{"engine":"bippy-1.2.0"}}}}