{"id":"CVE-2022-50770","state":"PUBLISHED","title":"ocfs2: fix memory leak in ocfs2_mount_volume()","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.","publishedAt":"2025-12-24T13:05:59.700Z","updatedAt":"2026-05-11T19:25:12.344Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9140db04ef185f934acf2b1b15b3dd5e6a6bfc22","status":"affected","lessThan":"7ef516888c4d30ae41bfcd79e7077d86d92794c5","versionType":"git"},{"version":"9140db04ef185f934acf2b1b15b3dd5e6a6bfc22","status":"affected","lessThan":"2b7e59ed2e77136e9360274f8f0fc208a003e95c","versionType":"git"},{"version":"9140db04ef185f934acf2b1b15b3dd5e6a6bfc22","status":"affected","lessThan":"8059e200259e9c483d715fc2df6340c227c3e196","versionType":"git"},{"version":"9140db04ef185f934acf2b1b15b3dd5e6a6bfc22","status":"affected","lessThan":"4efe1d2db731bad19891e2fb9b338724b1f598cc","versionType":"git"},{"version":"9140db04ef185f934acf2b1b15b3dd5e6a6bfc22","status":"affected","lessThan":"50ab0ca3aff4da26037113d69f5a756d8c1a92cd","versionType":"git"},{"version":"9140db04ef185f934acf2b1b15b3dd5e6a6bfc22","status":"affected","lessThan":"ce2fcf1516d674a174d9b34d1e1024d64de9fba3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ocfs2/journal.c","fs/ocfs2/journal.h","fs/ocfs2/super.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.30","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.107","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ocfs2/journal.c","fs/ocfs2/journal.h","fs/ocfs2/super.c"]}],"references":["https://git.kernel.org/stable/c/7ef516888c4d30ae41bfcd79e7077d86d92794c5","https://git.kernel.org/stable/c/2b7e59ed2e77136e9360274f8f0fc208a003e95c","https://git.kernel.org/stable/c/8059e200259e9c483d715fc2df6340c227c3e196","https://git.kernel.org/stable/c/4efe1d2db731bad19891e2fb9b338724b1f598cc","https://git.kernel.org/stable/c/50ab0ca3aff4da26037113d69f5a756d8c1a92cd","https://git.kernel.org/stable/c/ce2fcf1516d674a174d9b34d1e1024d64de9fba3"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50770.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50770","state":"PUBLISHED","datePublished":"2025-12-24T13:05:59.700Z","dateUpdated":"2026-05-11T19:25:12.344Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-24T13:02:21.546Z"},"containers":{"cna":{"title":"ocfs2: fix memory leak in ocfs2_mount_volume()","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9140db04ef185f934acf2b1b15b3dd5e6a6bfc22","status":"affected","lessThan":"7ef516888c4d30ae41bfcd79e7077d86d92794c5","versionType":"git"},{"version":"9140db04ef185f934acf2b1b15b3dd5e6a6bfc22","status":"affected","lessThan":"2b7e59ed2e77136e9360274f8f0fc208a003e95c","versionType":"git"},{"version":"9140db04ef185f934acf2b1b15b3dd5e6a6bfc22","status":"affected","lessThan":"8059e200259e9c483d715fc2df6340c227c3e196","versionType":"git"},{"version":"9140db04ef185f934acf2b1b15b3dd5e6a6bfc22","status":"affected","lessThan":"4efe1d2db731bad19891e2fb9b338724b1f598cc","versionType":"git"},{"version":"9140db04ef185f934acf2b1b15b3dd5e6a6bfc22","status":"affected","lessThan":"50ab0ca3aff4da26037113d69f5a756d8c1a92cd","versionType":"git"},{"version":"9140db04ef185f934acf2b1b15b3dd5e6a6bfc22","status":"affected","lessThan":"ce2fcf1516d674a174d9b34d1e1024d64de9fba3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ocfs2/journal.c","fs/ocfs2/journal.h","fs/ocfs2/super.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.30","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.107","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ocfs2/journal.c","fs/ocfs2/journal.h","fs/ocfs2/super.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7ef516888c4d30ae41bfcd79e7077d86d92794c5"},{"url":"https://git.kernel.org/stable/c/2b7e59ed2e77136e9360274f8f0fc208a003e95c"},{"url":"https://git.kernel.org/stable/c/8059e200259e9c483d715fc2df6340c227c3e196"},{"url":"https://git.kernel.org/stable/c/4efe1d2db731bad19891e2fb9b338724b1f598cc"},{"url":"https://git.kernel.org/stable/c/50ab0ca3aff4da26037113d69f5a756d8c1a92cd"},{"url":"https://git.kernel.org/stable/c/ce2fcf1516d674a174d9b34d1e1024d64de9fba3"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:25:12.344Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.4.229"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.10.163"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.15.107"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.0.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.1.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}