{ "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 \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" } } } }