{"id":"CVE-2022-49366","state":"PUBLISHED","title":"ksmbd: fix reference count leak in smb_check_perm_dacl()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix reference count leak in smb_check_perm_dacl()\n\nThe issue happens in a specific path in smb_check_perm_dacl(). When\n\"id\" and \"uid\" have the same value, the function simply jumps out of\nthe loop without decrementing the reference count of the object\n\"posix_acls\", which is increased by get_acl() earlier. This may\nresult in memory leaks.\n\nFix it by decreasing the reference count of \"posix_acls\" before\njumping to label \"check_access_bits\".","publishedAt":"2025-02-26T02:11:11.250Z","updatedAt":"2026-05-11T18:58:17.792Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"777cad1604d68ed4379ec899d1f7d2f6a29f01f0","status":"affected","lessThan":"cf824b95c12a1abacadbc2d069931963221a3414","versionType":"git"},{"version":"777cad1604d68ed4379ec899d1f7d2f6a29f01f0","status":"affected","lessThan":"248d71b440aef829f5cc5f6545ca113ef5062900","versionType":"git"},{"version":"777cad1604d68ed4379ec899d1f7d2f6a29f01f0","status":"affected","lessThan":"9758a6653c27867d810de02b4e5697163dda9883","versionType":"git"},{"version":"777cad1604d68ed4379ec899d1f7d2f6a29f01f0","status":"affected","lessThan":"d21a580dafc69aa04f46e6099616146a536b0724","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ksmbd/smbacl.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.47","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.15","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.4","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ksmbd/smbacl.c"]}],"references":["https://git.kernel.org/stable/c/cf824b95c12a1abacadbc2d069931963221a3414","https://git.kernel.org/stable/c/248d71b440aef829f5cc5f6545ca113ef5062900","https://git.kernel.org/stable/c/9758a6653c27867d810de02b4e5697163dda9883","https://git.kernel.org/stable/c/d21a580dafc69aa04f46e6099616146a536b0724"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49366.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49366","state":"PUBLISHED","datePublished":"2025-02-26T02:11:11.250Z","dateUpdated":"2026-05-11T18:58:17.792Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:08:31.555Z"},"containers":{"cna":{"title":"ksmbd: fix reference count leak in smb_check_perm_dacl()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix reference count leak in smb_check_perm_dacl()\n\nThe issue happens in a specific path in smb_check_perm_dacl(). When\n\"id\" and \"uid\" have the same value, the function simply jumps out of\nthe loop without decrementing the reference count of the object\n\"posix_acls\", which is increased by get_acl() earlier. This may\nresult in memory leaks.\n\nFix it by decreasing the reference count of \"posix_acls\" before\njumping to label \"check_access_bits\"."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"777cad1604d68ed4379ec899d1f7d2f6a29f01f0","status":"affected","lessThan":"cf824b95c12a1abacadbc2d069931963221a3414","versionType":"git"},{"version":"777cad1604d68ed4379ec899d1f7d2f6a29f01f0","status":"affected","lessThan":"248d71b440aef829f5cc5f6545ca113ef5062900","versionType":"git"},{"version":"777cad1604d68ed4379ec899d1f7d2f6a29f01f0","status":"affected","lessThan":"9758a6653c27867d810de02b4e5697163dda9883","versionType":"git"},{"version":"777cad1604d68ed4379ec899d1f7d2f6a29f01f0","status":"affected","lessThan":"d21a580dafc69aa04f46e6099616146a536b0724","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ksmbd/smbacl.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.47","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.15","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.4","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ksmbd/smbacl.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/cf824b95c12a1abacadbc2d069931963221a3414"},{"url":"https://git.kernel.org/stable/c/248d71b440aef829f5cc5f6545ca113ef5062900"},{"url":"https://git.kernel.org/stable/c/9758a6653c27867d810de02b4e5697163dda9883"},{"url":"https://git.kernel.org/stable/c/d21a580dafc69aa04f46e6099616146a536b0724"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T18:58:17.792Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.47"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.17.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.18.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2022-49366","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:42:34.679399Z"}}}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","description":"CWE-noinfo Not enough information"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:46:53.699Z"}}]}}}