{"cve":"CVE-2022-50770","nvd":{"published":"2025-12-24T13:16:03.813","modified":"2026-06-17T05:24:08.890","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix memory leak in ocfs2_mount_volume()\n\nThere is a memory leak reported by kmemleak:\n\n  unreferenced object 0xffff88810cc65e60 (size 32):\n    comm \"mount.ocfs2\", pid 23753, jiffies 4302528942 (age 34735.105s)\n    hex dump (first 32 bytes):\n      10 00 00 00 00 00 00 00 00 01 01 01 01 01 01 01  ................\n      01 01 01 01 01 01 01 01 00 00 00 00 00 00 00 00  ................\n    backtrace:\n      [<ffffffff8170f73d>] __kmalloc+0x4d/0x150\n      [<ffffffffa0ac3f51>] ocfs2_compute_replay_slots+0x121/0x330 [ocfs2]\n      [<ffffffffa0b65165>] ocfs2_check_volume+0x485/0x900 [ocfs2]\n      [<ffffffffa0b68129>] ocfs2_mount_volume.isra.0+0x1e9/0x650 [ocfs2]\n      [<ffffffffa0b7160b>] ocfs2_fill_super+0xe0b/0x1740 [ocfs2]\n      [<ffffffff818e1fe2>] mount_bdev+0x312/0x400\n      [<ffffffff819a086d>] legacy_get_tree+0xed/0x1d0\n      [<ffffffff818de82d>] vfs_get_tree+0x7d/0x230\n      [<ffffffff81957f92>] path_mount+0xd62/0x1760\n      [<ffffffff81958a5a>] do_mount+0xca/0xe0\n      [<ffffffff81958d3c>] __x64_sys_mount+0x12c/0x1a0\n      [<ffffffff82f26f15>] do_syscall_64+0x35/0x80\n      [<ffffffff8300006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThis call stack is related to two problems.  Firstly, the ocfs2 super uses\n\"replay_map\" to trace online/offline slots, in order to recover offline\nslots during recovery and mount.  But when ocfs2_truncate_log_init()\nreturns an error in ocfs2_mount_volume(), the memory of \"replay_map\" will\nnot be freed in error handling path.  Secondly, the memory of \"replay_map\"\nwill not be freed if d_make_root() returns an error in ocfs2_fill_super().\nBut the memory of \"replay_map\" will be freed normally when completing\nrecovery and mount in ocfs2_complete_mount_recovery().\n\nFix the first problem by adding error handling path to free \"replay_map\"\nwhen ocfs2_truncate_log_init() fails.  And fix the second problem by\ncalling ocfs2_free_replay_slots(osb) in the error handling path\n\"out_dismount\".  In addition, since ocfs2_free_replay_slots() is static,\nit is necessary to remove its static attribute and declare it in header\nfile.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/2b7e59ed2e77136e9360274f8f0fc208a003e95c","https://git.kernel.org/stable/c/4efe1d2db731bad19891e2fb9b338724b1f598cc","https://git.kernel.org/stable/c/50ab0ca3aff4da26037113d69f5a756d8c1a92cd","https://git.kernel.org/stable/c/7ef516888c4d30ae41bfcd79e7077d86d92794c5","https://git.kernel.org/stable/c/8059e200259e9c483d715fc2df6340c227c3e196"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:18:08.089039631+00:00"},"epss":{"cve":"CVE-2022-50770","score":0.00251,"percentile":0.16548,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}