{"id":"CVE-2026-93812","state":"PUBLISHED","title":"ksmbd: fix sd_ndr.data memory leak in ksmbd_vfs_set_sd_xattr","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix sd_ndr.data memory leak in ksmbd_vfs_set_sd_xattr\n\nndr_encode_v4_ntacl() allocates sd_ndr.data via kzalloc() at entry.\nIf any subsequent ndr_write_*() call returns error during encoding,\nthe allocated sd_ndr.data won't be freed and causes memory leak.\n\nMove kfree(sd_ndr.data) into out label to ensure the buffer gets\nreleased on all success and error return paths.","publishedAt":"2026-09-24T16:02:49.060Z","updatedAt":"2026-10-03T10:57:44.701Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"303fff2b8c77a85c62dbde3b27c24b084144c04c","status":"affected","lessThan":"306d6f370da7e0e5532dc51c972f4ce101e42431","versionType":"git"},{"version":"303fff2b8c77a85c62dbde3b27c24b084144c04c","status":"affected","lessThan":"dc55270e410ccb4d24e637c13b5c4c25bcd106d7","versionType":"git"},{"version":"303fff2b8c77a85c62dbde3b27c24b084144c04c","status":"affected","lessThan":"c866c3314a6853eb06c7a8bef67f43c8a8bdfb6e","versionType":"git"},{"version":"303fff2b8c77a85c62dbde3b27c24b084144c04c","status":"affected","lessThan":"9b4dec75498fd0a1c9eaea680aef59c9519eb16f","versionType":"git"},{"version":"303fff2b8c77a85c62dbde3b27c24b084144c04c","status":"affected","lessThan":"c521dd78e036b5e0cfd394dd2ff2218890dd9e41","versionType":"git"},{"version":"303fff2b8c77a85c62dbde3b27c24b084144c04c","status":"affected","lessThan":"d4d56b00c7df88cd5751e7415bdfabc9fdbc82a7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/server/vfs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/server/vfs.c"]}],"references":["https://git.kernel.org/stable/c/306d6f370da7e0e5532dc51c972f4ce101e42431","https://git.kernel.org/stable/c/dc55270e410ccb4d24e637c13b5c4c25bcd106d7","https://git.kernel.org/stable/c/c866c3314a6853eb06c7a8bef67f43c8a8bdfb6e","https://git.kernel.org/stable/c/9b4dec75498fd0a1c9eaea680aef59c9519eb16f","https://git.kernel.org/stable/c/c521dd78e036b5e0cfd394dd2ff2218890dd9e41","https://git.kernel.org/stable/c/d4d56b00c7df88cd5751e7415bdfabc9fdbc82a7"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93812.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93812","state":"PUBLISHED","datePublished":"2026-09-24T16:02:49.060Z","dateUpdated":"2026-10-03T10:57:44.701Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-18T17:59:28.790Z"},"containers":{"cna":{"title":"ksmbd: fix sd_ndr.data memory leak in ksmbd_vfs_set_sd_xattr","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix sd_ndr.data memory leak in ksmbd_vfs_set_sd_xattr\n\nndr_encode_v4_ntacl() allocates sd_ndr.data via kzalloc() at entry.\nIf any subsequent ndr_write_*() call returns error during encoding,\nthe allocated sd_ndr.data won't be freed and causes memory leak.\n\nMove kfree(sd_ndr.data) into out label to ensure the buffer gets\nreleased on all success and error return paths."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"303fff2b8c77a85c62dbde3b27c24b084144c04c","status":"affected","lessThan":"306d6f370da7e0e5532dc51c972f4ce101e42431","versionType":"git"},{"version":"303fff2b8c77a85c62dbde3b27c24b084144c04c","status":"affected","lessThan":"dc55270e410ccb4d24e637c13b5c4c25bcd106d7","versionType":"git"},{"version":"303fff2b8c77a85c62dbde3b27c24b084144c04c","status":"affected","lessThan":"c866c3314a6853eb06c7a8bef67f43c8a8bdfb6e","versionType":"git"},{"version":"303fff2b8c77a85c62dbde3b27c24b084144c04c","status":"affected","lessThan":"9b4dec75498fd0a1c9eaea680aef59c9519eb16f","versionType":"git"},{"version":"303fff2b8c77a85c62dbde3b27c24b084144c04c","status":"affected","lessThan":"c521dd78e036b5e0cfd394dd2ff2218890dd9e41","versionType":"git"},{"version":"303fff2b8c77a85c62dbde3b27c24b084144c04c","status":"affected","lessThan":"d4d56b00c7df88cd5751e7415bdfabc9fdbc82a7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/server/vfs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/server/vfs.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/306d6f370da7e0e5532dc51c972f4ce101e42431"},{"url":"https://git.kernel.org/stable/c/dc55270e410ccb4d24e637c13b5c4c25bcd106d7"},{"url":"https://git.kernel.org/stable/c/c866c3314a6853eb06c7a8bef67f43c8a8bdfb6e"},{"url":"https://git.kernel.org/stable/c/9b4dec75498fd0a1c9eaea680aef59c9519eb16f"},{"url":"https://git.kernel.org/stable/c/c521dd78e036b5e0cfd394dd2ff2218890dd9e41"},{"url":"https://git.kernel.org/stable/c/d4d56b00c7df88cd5751e7415bdfabc9fdbc82a7"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-03T10:57:44.701Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}