{"id":"CVE-2022-50076","state":"PUBLISHED","title":"cifs: Fix memory leak on the deferred close","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix memory leak on the deferred close\n\nxfstests on smb21 report kmemleak as below:\n\n  unreferenced object 0xffff8881767d6200 (size 64):\n    comm \"xfs_io\", pid 1284, jiffies 4294777434 (age 20.789s)\n    hex dump (first 32 bytes):\n      80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff  .Z......x..c....\n      00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00  .q.v............\n    backtrace:\n      [<00000000ad04e6ea>] cifs_close+0x92/0x2c0\n      [<0000000028b93c82>] __fput+0xff/0x3f0\n      [<00000000d8116851>] task_work_run+0x85/0xc0\n      [<0000000027e14f9e>] do_exit+0x5e5/0x1240\n      [<00000000fb492b95>] do_group_exit+0x58/0xe0\n      [<00000000129a32d9>] __x64_sys_exit_group+0x28/0x30\n      [<00000000e3f7d8e9>] do_syscall_64+0x35/0x80\n      [<00000000102e8a0b>] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nWhen cancel the deferred close work, we should also cleanup the struct\ncifs_deferred_close.","publishedAt":"2025-06-18T11:02:19.514Z","updatedAt":"2026-05-23T15:23:39.604Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9e992755be8f2d458a0bcbefd19e493483c1dba2","status":"affected","lessThan":"860efae127888ae535bc4eda1b7f27642727c69e","versionType":"git"},{"version":"9e992755be8f2d458a0bcbefd19e493483c1dba2","status":"affected","lessThan":"60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5","versionType":"git"},{"version":"9e992755be8f2d458a0bcbefd19e493483c1dba2","status":"affected","lessThan":"ca08d0eac020d48a3141dbec0a3cf64fbdb17cde","versionType":"git"},{"version":"0ca6ac8a2691762307beaa4841255d1cfe6b2684","status":"affected","versionType":"git"},{"version":"5.13.12","status":"affected","lessThan":"5.14","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/cifs/misc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"5.15.63","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.19.4","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/cifs/misc.c"]}],"references":["https://git.kernel.org/stable/c/860efae127888ae535bc4eda1b7f27642727c69e","https://git.kernel.org/stable/c/60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5","https://git.kernel.org/stable/c/ca08d0eac020d48a3141dbec0a3cf64fbdb17cde"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50076.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50076","state":"PUBLISHED","datePublished":"2025-06-18T11:02:19.514Z","dateUpdated":"2026-05-23T15:23:39.604Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-06-18T10:57:27.408Z"},"containers":{"cna":{"title":"cifs: Fix memory leak on the deferred close","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix memory leak on the deferred close\n\nxfstests on smb21 report kmemleak as below:\n\n  unreferenced object 0xffff8881767d6200 (size 64):\n    comm \"xfs_io\", pid 1284, jiffies 4294777434 (age 20.789s)\n    hex dump (first 32 bytes):\n      80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff  .Z......x..c....\n      00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00  .q.v............\n    backtrace:\n      [<00000000ad04e6ea>] cifs_close+0x92/0x2c0\n      [<0000000028b93c82>] __fput+0xff/0x3f0\n      [<00000000d8116851>] task_work_run+0x85/0xc0\n      [<0000000027e14f9e>] do_exit+0x5e5/0x1240\n      [<00000000fb492b95>] do_group_exit+0x58/0xe0\n      [<00000000129a32d9>] __x64_sys_exit_group+0x28/0x30\n      [<00000000e3f7d8e9>] do_syscall_64+0x35/0x80\n      [<00000000102e8a0b>] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nWhen cancel the deferred close work, we should also cleanup the struct\ncifs_deferred_close."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9e992755be8f2d458a0bcbefd19e493483c1dba2","status":"affected","lessThan":"860efae127888ae535bc4eda1b7f27642727c69e","versionType":"git"},{"version":"9e992755be8f2d458a0bcbefd19e493483c1dba2","status":"affected","lessThan":"60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5","versionType":"git"},{"version":"9e992755be8f2d458a0bcbefd19e493483c1dba2","status":"affected","lessThan":"ca08d0eac020d48a3141dbec0a3cf64fbdb17cde","versionType":"git"},{"version":"0ca6ac8a2691762307beaa4841255d1cfe6b2684","status":"affected","versionType":"git"},{"version":"5.13.12","status":"affected","lessThan":"5.14","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/cifs/misc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"5.15.63","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.19.4","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/cifs/misc.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/860efae127888ae535bc4eda1b7f27642727c69e"},{"url":"https://git.kernel.org/stable/c/60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5"},{"url":"https://git.kernel.org/stable/c/ca08d0eac020d48a3141dbec0a3cf64fbdb17cde"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:23:39.604Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.15.63"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.0"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13.12"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}