| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: fix potential out-of-bounds access on the first resume\n\nOut-of-bounds access occurs if the fast device is expanded unexpectedly\nbefore the first-time resume of the cache table. This happens because\nexpanding the fast device requires reloading the cache table for\ncache_create to allocate new in-core data structures that fit the new\nsize, and the check in cache_preresume is not performed during the\nfirst resume, leading to the issue.\n\nReproduce steps:\n\n1. prepare component devices:\n\ndmsetup create cmeta --table \"0 8192 linear /dev/sdc 0\"\ndmsetup create cdata --table \"0 65536 linear /dev/sdc 8192\"\ndmsetup create corig --table \"0 524288 linear /dev/sdc 262144\"\ndd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 oflag=direct\n\n2. load a cache table of 512 cache blocks, and deliberately expand the\n fast device before resuming the cache, making the in-core data\n structures inadequate.\n\ndmsetup create cache --notable\ndmsetup reload cache --table \"0 524288 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\"\ndmsetup reload cdata --table \"0 131072 linear /dev/sdc 8192\"\ndmsetup resume cdata\ndmsetup resume cache\n\n3. suspend the cache to write out the in-core dirty bitset and hint\n array, leading to out-of-bounds access to the dirty bitset at offset\n 0x40:\n\ndmsetup suspend cache\n\nKASAN reports:\n\n BUG: KASAN: vmalloc-out-of-bounds in is_dirty_callback+0x2b/0x80\n Read of size 8 at addr ffffc90000085040 by task dmsetup/90\n\n (...snip...)\n The buggy address belongs to the virtual mapping at\n [ffffc90000085000, ffffc90000087000) created by:\n cache_ctr+0x176a/0x35f0\n\n (...snip...)\n Memory state around the buggy address:\n ffffc90000084f00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8\n ffffc90000084f80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8\n >ffffc90000085000: 00 00 00 00 00 00 00 00 f8 f8 f8 f8 f8 f8 f8 f8\n ^\n ffffc90000085080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8\n ffffc90000085100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8\n\nFix by checking the size change on the first resume." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/md/dm-cache-target.c" |
| ], |
| "versions": [ |
| { |
| "version": "f494a9c6b1b6dd9a9f21bbb75d9210d478eeb498", |
| "lessThan": "e492f71854ce03474d49e87fd98b8df1f7cd1d2d", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "f494a9c6b1b6dd9a9f21bbb75d9210d478eeb498", |
| "lessThan": "2222b0929d00e2d13732b799b63be391b5de4492", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "f494a9c6b1b6dd9a9f21bbb75d9210d478eeb498", |
| "lessThan": "483b7261b35a9d369082ab298a6670912243f0be", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "f494a9c6b1b6dd9a9f21bbb75d9210d478eeb498", |
| "lessThan": "fdef3b94dfebd57e3077a578b6e309a2bb6fa688", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "f494a9c6b1b6dd9a9f21bbb75d9210d478eeb498", |
| "lessThan": "c52ec00cb2f9bebfada22edcc0db385b910a1cdb", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "f494a9c6b1b6dd9a9f21bbb75d9210d478eeb498", |
| "lessThan": "036dd6e3d2638103e0092864577ea1d091466b86", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "f494a9c6b1b6dd9a9f21bbb75d9210d478eeb498", |
| "lessThan": "13ed3624c6ef283acefa4cc42cc8ae54fd4391a4", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "f494a9c6b1b6dd9a9f21bbb75d9210d478eeb498", |
| "lessThan": "c0ade5d98979585d4f5a93e4514c2e9a65afa08d", |
| "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-cache-target.c" |
| ], |
| "versions": [ |
| { |
| "version": "3.13", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "3.13", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.19.324", |
| "lessThanOrEqual": "4.19.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.286", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.230", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.172", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.117", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.61", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.11.8", |
| "lessThanOrEqual": "6.11.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12", |
| "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": "3.13", |
| "versionEndExcluding": "4.19.324" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.13", |
| "versionEndExcluding": "5.4.286" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.13", |
| "versionEndExcluding": "5.10.230" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.13", |
| "versionEndExcluding": "5.15.172" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.13", |
| "versionEndExcluding": "6.1.117" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.13", |
| "versionEndExcluding": "6.6.61" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.13", |
| "versionEndExcluding": "6.11.8" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.13", |
| "versionEndExcluding": "6.12" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/e492f71854ce03474d49e87fd98b8df1f7cd1d2d" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/2222b0929d00e2d13732b799b63be391b5de4492" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/483b7261b35a9d369082ab298a6670912243f0be" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/fdef3b94dfebd57e3077a578b6e309a2bb6fa688" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c52ec00cb2f9bebfada22edcc0db385b910a1cdb" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/036dd6e3d2638103e0092864577ea1d091466b86" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/13ed3624c6ef283acefa4cc42cc8ae54fd4391a4" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c0ade5d98979585d4f5a93e4514c2e9a65afa08d" |
| } |
| ], |
| "title": "dm cache: fix potential out-of-bounds access on the first resume", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-50278", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
