| { |
| "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 array: fix releasing a faulty array block twice in dm_array_cursor_end\n\nWhen dm_bm_read_lock() fails due to locking or checksum errors, it\nreleases the faulty block implicitly while leaving an invalid output\npointer behind. The caller of dm_bm_read_lock() should not operate on\nthis invalid dm_block pointer, or it will lead to undefined result.\nFor example, the dm_array_cursor incorrectly caches the invalid pointer\non reading a faulty array block, causing a double release in\ndm_array_cursor_end(), then hitting the BUG_ON in dm-bufio cache_put().\n\nReproduce steps:\n\n1. initialize a cache device\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 $262144\"\ndd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1\ndmsetup create cache --table \"0 524288 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\"\n\n2. wipe the second array block offline\n\ndmsteup remove cache cmeta cdata corig\nmapping_root=$(dd if=/dev/sdc bs=1c count=8 skip=192 \\\n2>/dev/null | hexdump -e '1/8 \"%u\\n\"')\nablock=$(dd if=/dev/sdc bs=1c count=8 skip=$((4096*mapping_root+2056)) \\\n2>/dev/null | hexdump -e '1/8 \"%u\\n\"')\ndd if=/dev/zero of=/dev/sdc bs=4k count=1 seek=$ablock\n\n3. try reopen the cache device\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\"\ndmsetup create cache --table \"0 524288 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\"\n\nKernel logs:\n\n(snip)\ndevice-mapper: array: array_block_check failed: blocknr 0 != wanted 10\ndevice-mapper: block manager: array validator check failed for block 10\ndevice-mapper: array: get_ablock failed\ndevice-mapper: cache metadata: dm_array_cursor_next for mapping failed\n------------[ cut here ]------------\nkernel BUG at drivers/md/dm-bufio.c:638!\n\nFix by setting the cached block pointer to NULL on errors.\n\nIn addition to the reproducer described above, this fix can be\nverified using the \"array_cursor/damaged\" test in dm-unit:\n dm-unit run /pdata/array_cursor/damaged --kernel-dir <KERNEL_DIR>" |
| } |
| ], |
| "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-array.c" |
| ], |
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| { |
| "version": "fdd1315aa5f022fe6574efdc2d9535f75a0ee255", |
| "lessThan": "9c7c03d0e926762adf3a3a0ba86156fb5e19538b", |
| "status": "affected", |
| "versionType": "git" |
| }, |
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| "lessThan": "fc1ef07c3522e257e32702954f265debbcb096a7", |
| "status": "affected", |
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| }, |
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| "version": "fdd1315aa5f022fe6574efdc2d9535f75a0ee255", |
| "lessThan": "738994872d77e189b2d13c501a1d145e95d98f46", |
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| "version": "fdd1315aa5f022fe6574efdc2d9535f75a0ee255", |
| "lessThan": "e477021d252c007f0c6d45b5d13d341efed03979", |
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| "version": "fdd1315aa5f022fe6574efdc2d9535f75a0ee255", |
| "lessThan": "6002bec5354f86d1a2df21468f68e3ec03ede9da", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "fdd1315aa5f022fe6574efdc2d9535f75a0ee255", |
| "lessThan": "017c4470bff53585370028fec9341247bad358ff", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "fdd1315aa5f022fe6574efdc2d9535f75a0ee255", |
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| "status": "affected", |
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| } |
| ] |
| }, |
| { |
| "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-array.c" |
| ], |
| "versions": [ |
| { |
| "version": "4.9", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "4.9", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.290", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.234", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.177", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.125", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.72", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12.10", |
| "lessThanOrEqual": "6.12.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.13", |
| "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": "4.9", |
| "versionEndExcluding": "5.4.290" |
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| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/9c7c03d0e926762adf3a3a0ba86156fb5e19538b" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/fc1ef07c3522e257e32702954f265debbcb096a7" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/738994872d77e189b2d13c501a1d145e95d98f46" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/e477021d252c007f0c6d45b5d13d341efed03979" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/6002bec5354f86d1a2df21468f68e3ec03ede9da" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/017c4470bff53585370028fec9341247bad358ff" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/f2893c0804d86230ffb8f1c8703fdbb18648abc8" |
| } |
| ], |
| "title": "dm array: fix releasing a faulty array block twice in dm_array_cursor_end", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-57929", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
