{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50092","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-06-18T10:57:27.411Z","datePublished":"2025-06-18T11:02:31.372Z","dateUpdated":"2026-05-11T19:12:40.591Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:12:40.591Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm thin: fix use-after-free crash in dm_sm_register_threshold_callback\n\nFault inject on pool metadata device reports:\n  BUG: KASAN: use-after-free in dm_pool_register_metadata_threshold+0x40/0x80\n  Read of size 8 at addr ffff8881b9d50068 by task dmsetup/950\n\n  CPU: 7 PID: 950 Comm: dmsetup Tainted: G        W         5.19.0-rc6 #1\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 04/01/2014\n  Call Trace:\n   <TASK>\n   dump_stack_lvl+0x34/0x44\n   print_address_description.constprop.0.cold+0xeb/0x3f4\n   kasan_report.cold+0xe6/0x147\n   dm_pool_register_metadata_threshold+0x40/0x80\n   pool_ctr+0xa0a/0x1150\n   dm_table_add_target+0x2c8/0x640\n   table_load+0x1fd/0x430\n   ctl_ioctl+0x2c4/0x5a0\n   dm_ctl_ioctl+0xa/0x10\n   __x64_sys_ioctl+0xb3/0xd0\n   do_syscall_64+0x35/0x80\n   entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThis can be easily reproduced using:\n  echo offline > /sys/block/sda/device/state\n  dd if=/dev/zero of=/dev/mapper/thin bs=4k count=10\n  dmsetup load pool --table \"0 20971520 thin-pool /dev/sda /dev/sdb 128 0 0\"\n\nIf a metadata commit fails, the transaction will be aborted and the\nmetadata space maps will be destroyed. If a DM table reload then\nhappens for this failed thin-pool, a use-after-free will occur in\ndm_sm_register_threshold_callback (called from\ndm_pool_register_metadata_threshold).\n\nFix this by in dm_pool_register_metadata_threshold() by returning the\n-EINVAL error if the thin-pool is in fail mode. Also fail pool_ctr()\nwith a new error message: \"Error registering metadata threshold\"."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/dm-thin-metadata.c","drivers/md/dm-thin.c"],"versions":[{"version":"ac8c3f3df65e487bbcabf274eeeb9cd222f5da1e","lessThan":"05cef0999b3208b5a6ede1bfac855139e4de55ef","status":"affected","versionType":"git"},{"version":"ac8c3f3df65e487bbcabf274eeeb9cd222f5da1e","lessThan":"5e2cf705155a1514be3c96ea664a9cd356998ee7","status":"affected","versionType":"git"},{"version":"ac8c3f3df65e487bbcabf274eeeb9cd222f5da1e","lessThan":"f83131a3071a0b61a4d7dca70f95adb3ffad920e","status":"affected","versionType":"git"},{"version":"ac8c3f3df65e487bbcabf274eeeb9cd222f5da1e","lessThan":"1a199fa9217d28511ff88529238fd9980ea64cf3","status":"affected","versionType":"git"},{"version":"ac8c3f3df65e487bbcabf274eeeb9cd222f5da1e","lessThan":"e4dbe24f4bfd8377e7ba79fdcdb7c4d6eb1c6790","status":"affected","versionType":"git"},{"version":"ac8c3f3df65e487bbcabf274eeeb9cd222f5da1e","lessThan":"3534e5a5ed2997ca1b00f44a0378a075bd05e8a3","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/dm-thin-metadata.c","drivers/md/dm-thin.c"],"versions":[{"version":"3.10","status":"affected"},{"version":"0","lessThan":"3.10","status":"unaffected","versionType":"semver"},{"version":"5.4.211","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.137","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.61","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.18.18","lessThanOrEqual":"5.18.*","status":"unaffected","versionType":"semver"},{"version":"5.19.2","lessThanOrEqual":"5.19.*","status":"unaffected","versionType":"semver"},{"version":"6.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"5.4.211"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"5.10.137"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"5.15.61"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"5.18.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"5.19.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/05cef0999b3208b5a6ede1bfac855139e4de55ef"},{"url":"https://git.kernel.org/stable/c/5e2cf705155a1514be3c96ea664a9cd356998ee7"},{"url":"https://git.kernel.org/stable/c/f83131a3071a0b61a4d7dca70f95adb3ffad920e"},{"url":"https://git.kernel.org/stable/c/1a199fa9217d28511ff88529238fd9980ea64cf3"},{"url":"https://git.kernel.org/stable/c/e4dbe24f4bfd8377e7ba79fdcdb7c4d6eb1c6790"},{"url":"https://git.kernel.org/stable/c/3534e5a5ed2997ca1b00f44a0378a075bd05e8a3"}],"title":"dm thin: fix use-after-free crash in dm_sm_register_threshold_callback","x_generator":{"engine":"bippy-1.2.0"}}}}