{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-47343", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T14:28:16.979Z", "datePublished": "2024-05-21T14:35:50.293Z", "dateUpdated": "2025-05-04T07:09:01.476Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T07:09:01.476Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm btree remove: assign new_root only when removal succeeds\n\nremove_raw() in dm_btree_remove() may fail due to IO read error\n(e.g. read the content of origin block fails during shadowing),\nand the value of shadow_spine::root is uninitialized, but\nthe uninitialized value is still assign to new_root in the\nend of dm_btree_remove().\n\nFor dm-thin, the value of pmd->details_root or pmd->root will become\nan uninitialized value, so if trying to read details_info tree again\nout-of-bound memory may occur as showed below:\n\n  general protection fault, probably for non-canonical address 0x3fdcb14c8d7520\n  CPU: 4 PID: 515 Comm: dmsetup Not tainted 5.13.0-rc6\n  Hardware name: QEMU Standard PC\n  RIP: 0010:metadata_ll_load_ie+0x14/0x30\n  Call Trace:\n   sm_metadata_count_is_more_than_one+0xb9/0xe0\n   dm_tm_shadow_block+0x52/0x1c0\n   shadow_step+0x59/0xf0\n   remove_raw+0xb2/0x170\n   dm_btree_remove+0xf4/0x1c0\n   dm_pool_delete_thin_device+0xc3/0x140\n   pool_message+0x218/0x2b0\n   target_message+0x251/0x290\n   ctl_ioctl+0x1c4/0x4d0\n   dm_ctl_ioctl+0xe/0x20\n   __x64_sys_ioctl+0x7b/0xb0\n   do_syscall_64+0x40/0xb0\n   entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nFixing it by only assign new_root when removal succeeds"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/md/persistent-data/dm-btree-remove.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "4c84b3e0728ffe10d89c633694c35a02b5c477dc", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "c154775619186781aaf8a99333ac07437a1768d5", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "73f27adaa73e3057a9ec464e33c4f54d34ea5de3", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "8fbae4a1bdb5b889490cdee929e68540151536e5", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "964d57d1962d7e68f0f578f05d9ae4a104d74851", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ba47e65a5de3e0e8270301a409fc63d3129fdb9e", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "89bf942314b78d454db92427201421b5dec132d9", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ad365e9351ac2b450e7e79932ff6abf59342d91a", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "b6e58b5466b2959f83034bead2e2e1395cca8aeb", "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/persistent-data/dm-btree-remove.c"], "versions": [{"version": "4.4.276", "lessThanOrEqual": "4.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.9.276", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.240", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.198", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.133", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.51", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.12.18", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.13.3", "lessThanOrEqual": "5.13.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.14", "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:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.4.276"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.9.276"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.14.240"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.19.198"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.4.133"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.10.51"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.12.18"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.13.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.14"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4c84b3e0728ffe10d89c633694c35a02b5c477dc"}, {"url": "https://git.kernel.org/stable/c/c154775619186781aaf8a99333ac07437a1768d5"}, {"url": "https://git.kernel.org/stable/c/73f27adaa73e3057a9ec464e33c4f54d34ea5de3"}, {"url": "https://git.kernel.org/stable/c/8fbae4a1bdb5b889490cdee929e68540151536e5"}, {"url": "https://git.kernel.org/stable/c/964d57d1962d7e68f0f578f05d9ae4a104d74851"}, {"url": "https://git.kernel.org/stable/c/ba47e65a5de3e0e8270301a409fc63d3129fdb9e"}, {"url": "https://git.kernel.org/stable/c/89bf942314b78d454db92427201421b5dec132d9"}, {"url": "https://git.kernel.org/stable/c/ad365e9351ac2b450e7e79932ff6abf59342d91a"}, {"url": "https://git.kernel.org/stable/c/b6e58b5466b2959f83034bead2e2e1395cca8aeb"}], "title": "dm btree remove: assign new_root only when removal succeeds", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47343", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-05-23T19:04:19.383705Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:15:19.329Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.519Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/4c84b3e0728ffe10d89c633694c35a02b5c477dc", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c154775619186781aaf8a99333ac07437a1768d5", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/73f27adaa73e3057a9ec464e33c4f54d34ea5de3", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/8fbae4a1bdb5b889490cdee929e68540151536e5", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/964d57d1962d7e68f0f578f05d9ae4a104d74851", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ba47e65a5de3e0e8270301a409fc63d3129fdb9e", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/89bf942314b78d454db92427201421b5dec132d9", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ad365e9351ac2b450e7e79932ff6abf59342d91a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/b6e58b5466b2959f83034bead2e2e1395cca8aeb", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/4c84b3e0728ffe10d89c633694c35a02b5c477dc", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c154775619186781aaf8a99333ac07437a1768d5", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/73f27adaa73e3057a9ec464e33c4f54d34ea5de3", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/8fbae4a1bdb5b889490cdee929e68540151536e5", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/964d57d1962d7e68f0f578f05d9ae4a104d74851", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ba47e65a5de3e0e8270301a409fc63d3129fdb9e", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/89bf942314b78d454db92427201421b5dec132d9", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ad365e9351ac2b450e7e79932ff6abf59342d91a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/b6e58b5466b2959f83034bead2e2e1395cca8aeb", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.519Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47343", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-05-23T19:04:19.383705Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-05-23T19:04:26.101Z"}, "title": "CISA ADP Vulnrichment"}], "cna": {"title": "dm btree remove: assign new_root only when removal succeeds", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "4c84b3e0728ffe10d89c633694c35a02b5c477dc", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "c154775619186781aaf8a99333ac07437a1768d5", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "73f27adaa73e3057a9ec464e33c4f54d34ea5de3", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "8fbae4a1bdb5b889490cdee929e68540151536e5", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "964d57d1962d7e68f0f578f05d9ae4a104d74851", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ba47e65a5de3e0e8270301a409fc63d3129fdb9e", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "89bf942314b78d454db92427201421b5dec132d9", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ad365e9351ac2b450e7e79932ff6abf59342d91a", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "b6e58b5466b2959f83034bead2e2e1395cca8aeb", "versionType": "git"}], "programFiles": ["drivers/md/persistent-data/dm-btree-remove.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "unaffected", "version": "4.4.276", "versionType": "semver", "lessThanOrEqual": "4.4.*"}, {"status": "unaffected", "version": "4.9.276", "versionType": "semver", "lessThanOrEqual": "4.9.*"}, {"status": "unaffected", "version": "4.14.240", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.198", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.133", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.51", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.12.18", "versionType": "semver", "lessThanOrEqual": "5.12.*"}, {"status": "unaffected", "version": "5.13.3", "versionType": "semver", "lessThanOrEqual": "5.13.*"}, {"status": "unaffected", "version": "5.14", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/md/persistent-data/dm-btree-remove.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/4c84b3e0728ffe10d89c633694c35a02b5c477dc"}, {"url": "https://git.kernel.org/stable/c/c154775619186781aaf8a99333ac07437a1768d5"}, {"url": "https://git.kernel.org/stable/c/73f27adaa73e3057a9ec464e33c4f54d34ea5de3"}, {"url": "https://git.kernel.org/stable/c/8fbae4a1bdb5b889490cdee929e68540151536e5"}, {"url": "https://git.kernel.org/stable/c/964d57d1962d7e68f0f578f05d9ae4a104d74851"}, {"url": "https://git.kernel.org/stable/c/ba47e65a5de3e0e8270301a409fc63d3129fdb9e"}, {"url": "https://git.kernel.org/stable/c/89bf942314b78d454db92427201421b5dec132d9"}, {"url": "https://git.kernel.org/stable/c/ad365e9351ac2b450e7e79932ff6abf59342d91a"}, {"url": "https://git.kernel.org/stable/c/b6e58b5466b2959f83034bead2e2e1395cca8aeb"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm btree remove: assign new_root only when removal succeeds\n\nremove_raw() in dm_btree_remove() may fail due to IO read error\n(e.g. read the content of origin block fails during shadowing),\nand the value of shadow_spine::root is uninitialized, but\nthe uninitialized value is still assign to new_root in the\nend of dm_btree_remove().\n\nFor dm-thin, the value of pmd->details_root or pmd->root will become\nan uninitialized value, so if trying to read details_info tree again\nout-of-bound memory may occur as showed below:\n\n  general protection fault, probably for non-canonical address 0x3fdcb14c8d7520\n  CPU: 4 PID: 515 Comm: dmsetup Not tainted 5.13.0-rc6\n  Hardware name: QEMU Standard PC\n  RIP: 0010:metadata_ll_load_ie+0x14/0x30\n  Call Trace:\n   sm_metadata_count_is_more_than_one+0xb9/0xe0\n   dm_tm_shadow_block+0x52/0x1c0\n   shadow_step+0x59/0xf0\n   remove_raw+0xb2/0x170\n   dm_btree_remove+0xf4/0x1c0\n   dm_pool_delete_thin_device+0xc3/0x140\n   pool_message+0x218/0x2b0\n   target_message+0x251/0x290\n   ctl_ioctl+0x1c4/0x4d0\n   dm_ctl_ioctl+0xe/0x20\n   __x64_sys_ioctl+0x7b/0xb0\n   do_syscall_64+0x40/0xb0\n   entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nFixing it by only assign new_root when removal succeeds"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.4.276"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.9.276"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.240"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.198"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.133"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.51"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.12.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.13.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.14"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T07:09:01.476Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47343", "state": "PUBLISHED", "dateUpdated": "2025-05-04T07:09:01.476Z", "dateReserved": "2024-05-21T14:28:16.979Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-21T14:35:50.293Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "10282F37-B17F-4974-967E-FCD5ABC9AB8E", "versionEndExcluding": "4.4.276", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C79FFC06-9530-4CD7-B651-01D786CC925E", "versionEndExcluding": "4.9.276", "versionStartIncluding": "4.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FB359B2E-773D-4D52-9915-E07A47ABE72B", "versionEndExcluding": "4.14.240", "versionStartIncluding": "4.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B93AEDB9-C52B-4222-8F9A-882DAD9EF5B2", "versionEndExcluding": "4.19.198", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "65A8F1FF-5639-455A-8BF4-9FF529240505", "versionEndExcluding": "5.4.133", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "93289127-DFB3-4515-89DD-50521FF8B7FF", "versionEndExcluding": "5.10.51", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "79D13C82-E06F-4A70-A3D1-C09494FBC94D", "versionEndExcluding": "5.12.18", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "853187F6-707A-487B-95C0-621B5211B43C", "versionEndExcluding": "5.13.3", "versionStartIncluding": "5.13", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm btree remove: assign new_root only when removal succeeds\n\nremove_raw() in dm_btree_remove() may fail due to IO read error\n(e.g. read the content of origin block fails during shadowing),\nand the value of shadow_spine::root is uninitialized, but\nthe uninitialized value is still assign to new_root in the\nend of dm_btree_remove().\n\nFor dm-thin, the value of pmd->details_root or pmd->root will become\nan uninitialized value, so if trying to read details_info tree again\nout-of-bound memory may occur as showed below:\n\n  general protection fault, probably for non-canonical address 0x3fdcb14c8d7520\n  CPU: 4 PID: 515 Comm: dmsetup Not tainted 5.13.0-rc6\n  Hardware name: QEMU Standard PC\n  RIP: 0010:metadata_ll_load_ie+0x14/0x30\n  Call Trace:\n   sm_metadata_count_is_more_than_one+0xb9/0xe0\n   dm_tm_shadow_block+0x52/0x1c0\n   shadow_step+0x59/0xf0\n   remove_raw+0xb2/0x170\n   dm_btree_remove+0xf4/0x1c0\n   dm_pool_delete_thin_device+0xc3/0x140\n   pool_message+0x218/0x2b0\n   target_message+0x251/0x290\n   ctl_ioctl+0x1c4/0x4d0\n   dm_ctl_ioctl+0xe/0x20\n   __x64_sys_ioctl+0x7b/0xb0\n   do_syscall_64+0x40/0xb0\n   entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nFixing it by only assign new_root when removal succeeds"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dm btree remove: asigna new_root solo cuando la eliminaci\u00f3n se realiza correctamente. remove_raw() en dm_btree_remove() puede fallar debido a un error de lectura de E/S (por ejemplo, la lectura del contenido del bloque de origen falla durante el sombreado), y el valor de shadow_spine::root no est\u00e1 inicializado, pero el valor no inicializado a\u00fan se asigna a new_root al final de dm_btree_remove(). Para dm-thin, el valor de pmd->details_root o pmd->root se convertir\u00e1 en un valor no inicializado, por lo que si intenta leer el \u00e1rbol de detalles_info nuevamente, puede ocurrir que la memoria est\u00e9 fuera de los l\u00edmites, como se muestra a continuaci\u00f3n: falla de protecci\u00f3n general, probablemente para no usuarios. -direcci\u00f3n can\u00f3nica 0x3fdcb14c8d7520 CPU: 4 PID: 515 Comm: dmsetup No contaminado 5.13.0-rc6 Nombre de hardware: QEMU PC est\u00e1ndar RIP: 0010:metadata_ll_load_ie+0x14/0x30 Seguimiento de llamadas: sm_metadata_count_is_more_than_one+0xb9/0xe0 m_shadow_block+0x52/0x1c0 sombra_paso+ 0x59/0xf0 remove_raw+0xb2/0x170 dm_btree_remove+0xf4/0x1c0 dm_pool_delete_thin_device+0xc3/0x140 pool_message+0x218/0x2b0 target_message+0x251/0x290 ctl_ioctl+0x1c4/0x4d0 _ctl_ioctl+0xe/0x20 __x64_sys_ioctl+0x7b/0xb0 do_syscall_64+0x40/0xb0 entrada_SYSCALL_64_after_hwframe+ 0x44/0xae Se soluciona asignando new_root \u00fanicamente cuando la eliminaci\u00f3n se realiza correctamente"}], "id": "CVE-2021-47343", "lastModified": "2025-05-12T19:58:09.607", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-05-21T15:15:20.993", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4c84b3e0728ffe10d89c633694c35a02b5c477dc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/73f27adaa73e3057a9ec464e33c4f54d34ea5de3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/89bf942314b78d454db92427201421b5dec132d9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8fbae4a1bdb5b889490cdee929e68540151536e5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/964d57d1962d7e68f0f578f05d9ae4a104d74851"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ad365e9351ac2b450e7e79932ff6abf59342d91a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b6e58b5466b2959f83034bead2e2e1395cca8aeb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ba47e65a5de3e0e8270301a409fc63d3129fdb9e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c154775619186781aaf8a99333ac07437a1768d5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4c84b3e0728ffe10d89c633694c35a02b5c477dc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/73f27adaa73e3057a9ec464e33c4f54d34ea5de3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/89bf942314b78d454db92427201421b5dec132d9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8fbae4a1bdb5b889490cdee929e68540151536e5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/964d57d1962d7e68f0f578f05d9ae4a104d74851"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ad365e9351ac2b450e7e79932ff6abf59342d91a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b6e58b5466b2959f83034bead2e2e1395cca8aeb"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ba47e65a5de3e0e8270301a409fc63d3129fdb9e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c154775619186781aaf8a99333ac07437a1768d5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1188"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: dm btree remove: assign new_root only when removal succeeds", "id": "2282413", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282413"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-824", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndm btree remove: assign new_root only when removal succeeds\nremove_raw() in dm_btree_remove() may fail due to IO read error\n(e.g. read the content of origin block fails during shadowing),\nand the value of shadow_spine::root is uninitialized, but\nthe uninitialized value is still assign to new_root in the\nend of dm_btree_remove().\nFor dm-thin, the value of pmd->details_root or pmd->root will become\nan uninitialized value, so if trying to read details_info tree again\nout-of-bound memory may occur as showed below:\ngeneral protection fault, probably for non-canonical address 0x3fdcb14c8d7520\nCPU: 4 PID: 515 Comm: dmsetup Not tainted 5.13.0-rc6\nHardware name: QEMU Standard PC\nRIP: 0010:metadata_ll_load_ie+0x14/0x30\nCall Trace:\nsm_metadata_count_is_more_than_one+0xb9/0xe0\ndm_tm_shadow_block+0x52/0x1c0\nshadow_step+0x59/0xf0\nremove_raw+0xb2/0x170\ndm_btree_remove+0xf4/0x1c0\ndm_pool_delete_thin_device+0xc3/0x140\npool_message+0x218/0x2b0\ntarget_message+0x251/0x290\nctl_ioctl+0x1c4/0x4d0\ndm_ctl_ioctl+0xe/0x20\n__x64_sys_ioctl+0x7b/0xb0\ndo_syscall_64+0x40/0xb0\nentry_SYSCALL_64_after_hwframe+0x44/0xae\nFixing it by only assign new_root when removal succeeds"], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2021-47343", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47343\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47343\nhttps://lore.kernel.org/linux-cve-announce/2024052138-CVE-2021-47343-1974@gregkh/T"], "statement": "This vulnerability is rated as a moderate severity because it can cause system crashes or unpredictable behavior due to invalid memory access, but it does not directly compromise data security or allow unauthorized access.", "threat_severity": "Moderate"}