{"id":"CVE-2022-50076","title":"cifs: Fix memory leak on the deferred close","summary":"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 128…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 9e992755be8f2d458a0bcbefd19e493483c1dba2 < 860efae127888ae535bc4eda1b7f27642727c69e","Linux >= 9e992755be8f2d458a0bcbefd19e493483c1dba2 < 60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5","Linux >= 9e992755be8f2d458a0bcbefd19e493483c1dba2 < ca08d0eac020d48a3141dbec0a3cf64fbdb17cde","Linux 0ca6ac8a2691762307beaa4841255d1cfe6b2684","Linux >= 5.13.12 < 5.14","Linux 5.14"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T19:53:59.920129Z"},"published":"2025-06-18","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:00:15.987Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-50076","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"}],"tags":["cve.org"],"epss":0.00191,"epssPercentile":0.08782,"ingestedAt":"2026-11-05T22:38:31.645Z","slug":"CVE-2022-50076","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= 9e992755be8f2d458a0bcbefd19e493483c1dba2 < 860efae127888ae535bc4eda1b7f27642727c69e`\n- `Linux >= 9e992755be8f2d458a0bcbefd19e493483c1dba2 < 60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5`\n- `Linux >= 9e992755be8f2d458a0bcbefd19e493483c1dba2 < ca08d0eac020d48a3141dbec0a3cf64fbdb17cde`\n- `Linux 0ca6ac8a2691762307beaa4841255d1cfe6b2684`\n- `Linux >= 5.13.12 < 5.14`\n- `Linux 5.14`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}