CVE-2024-57929 (GCVE-0-2024-57929)

Vulnerability from cvelistv5 – Published: 2025-01-19 11:52 – Updated: 2026-05-12 12:01
VLAI?
Title
dm array: fix releasing a faulty array block twice in dm_array_cursor_end
Summary
In the Linux kernel, the following vulnerability has been resolved: dm array: fix releasing a faulty array block twice in dm_array_cursor_end When dm_bm_read_lock() fails due to locking or checksum errors, it releases the faulty block implicitly while leaving an invalid output pointer behind. The caller of dm_bm_read_lock() should not operate on this invalid dm_block pointer, or it will lead to undefined result. For example, the dm_array_cursor incorrectly caches the invalid pointer on reading a faulty array block, causing a double release in dm_array_cursor_end(), then hitting the BUG_ON in dm-bufio cache_put(). Reproduce steps: 1. initialize a cache device dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 65536 linear /dev/sdc 8192" dmsetup create corig --table "0 524288 linear /dev/sdc $262144" dd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 dmsetup create cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0" 2. wipe the second array block offline dmsteup remove cache cmeta cdata corig mapping_root=$(dd if=/dev/sdc bs=1c count=8 skip=192 \ 2>/dev/null | hexdump -e '1/8 "%u\n"') ablock=$(dd if=/dev/sdc bs=1c count=8 skip=$((4096*mapping_root+2056)) \ 2>/dev/null | hexdump -e '1/8 "%u\n"') dd if=/dev/zero of=/dev/sdc bs=4k count=1 seek=$ablock 3. try reopen the cache device dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 65536 linear /dev/sdc 8192" dmsetup create corig --table "0 524288 linear /dev/sdc $262144" dmsetup create cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0" Kernel logs: (snip) device-mapper: array: array_block_check failed: blocknr 0 != wanted 10 device-mapper: block manager: array validator check failed for block 10 device-mapper: array: get_ablock failed device-mapper: cache metadata: dm_array_cursor_next for mapping failed ------------[ cut here ]------------ kernel BUG at drivers/md/dm-bufio.c:638! Fix by setting the cached block pointer to NULL on errors. In addition to the reproducer described above, this fix can be verified using the "array_cursor/damaged" test in dm-unit: dm-unit run /pdata/array_cursor/damaged --kernel-dir <KERNEL_DIR>
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: fdd1315aa5f022fe6574efdc2d9535f75a0ee255 , < 9c7c03d0e926762adf3a3a0ba86156fb5e19538b (git)
Affected: fdd1315aa5f022fe6574efdc2d9535f75a0ee255 , < fc1ef07c3522e257e32702954f265debbcb096a7 (git)
Affected: fdd1315aa5f022fe6574efdc2d9535f75a0ee255 , < 738994872d77e189b2d13c501a1d145e95d98f46 (git)
Affected: fdd1315aa5f022fe6574efdc2d9535f75a0ee255 , < e477021d252c007f0c6d45b5d13d341efed03979 (git)
Affected: fdd1315aa5f022fe6574efdc2d9535f75a0ee255 , < 6002bec5354f86d1a2df21468f68e3ec03ede9da (git)
Affected: fdd1315aa5f022fe6574efdc2d9535f75a0ee255 , < 017c4470bff53585370028fec9341247bad358ff (git)
Affected: fdd1315aa5f022fe6574efdc2d9535f75a0ee255 , < f2893c0804d86230ffb8f1c8703fdbb18648abc8 (git)
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Linux Linux Affected: 4.9
Unaffected: 0 , < 4.9 (semver)
Unaffected: 5.4.290 , ≤ 5.4.* (semver)
Unaffected: 5.10.234 , ≤ 5.10.* (semver)
Unaffected: 5.15.177 , ≤ 5.15.* (semver)
Unaffected: 6.1.125 , ≤ 6.1.* (semver)
Unaffected: 6.6.72 , ≤ 6.6.* (semver)
Unaffected: 6.12.10 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
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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\u003e/dev/null | hexdump -e \u00271/8 \\\"%u\\\\n\\\"\u0027)\\nablock=$(dd if=/dev/sdc bs=1c count=8 skip=$((4096*mapping_root+2056)) \\\\\\n2\u003e/dev/null | hexdump -e \u00271/8 \\\"%u\\\\n\\\"\u0027)\\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 \u003cKERNEL_DIR\u003e\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dm array: se corrige la liberaci\u00f3n de un bloque de matriz defectuoso dos veces en dm_array_cursor_end Cuando dm_bm_read_lock() falla debido a errores de bloqueo o suma de comprobaci\u00f3n, libera el bloque defectuoso impl\u00edcitamente mientras deja atr\u00e1s un puntero de salida no v\u00e1lido. El llamador de dm_bm_read_lock() no debe operar en este puntero dm_block no v\u00e1lido, o conducir\u00e1 a un resultado indefinido. Por ejemplo, dm_array_cursor almacena en cach\u00e9 incorrectamente el puntero no v\u00e1lido al leer un bloque de matriz defectuoso, lo que causa una doble liberaci\u00f3n en dm_array_cursor_end(), y luego alcanza el BUG_ON en dm-bufio cache_put(). Reproducir los pasos: 1. inicializar un dispositivo de cach\u00e9 dmsetup create cmeta --table \\\"0 8192 linear /dev/sdc 0\\\" dmsetup create cdata --table \\\"0 65536 linear /dev/sdc 8192\\\" dmsetup create corig --table \\\"0 524288 linear /dev/sdc $262144\\\" dd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 dmsetup create cache --table \\\"0 524288 cache /dev/mapper/cmeta \\\\ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\\\" 2. borrar el segundo bloque de matriz sin conexi\u00f3n dmsteup remove cache cmeta cdata corig mapping_root=$(dd if=/dev/sdc bs=1c count=8 skip=192 \\\\ 2\u0026gt;/dev/null | hexdump -e \u00271/8 \\\"%u\\\\n\\\"\u0027) ablock=$(dd if=/dev/sdc bs=1c count=8 skip=$((4096*mapping_root+2056)) \\\\ 2\u0026gt;/dev/null | hexdump -e \u00271/8 \\\"%u\\\\n\\\"\u0027) dd if=/dev/zero of=/dev/sdc bs=4k count=1 seek=$ablock 3. Intente volver a abrir el dispositivo de cach\u00e9 dmsetup create cmeta --table \\\"0 8192 lineal /dev/sdc 0\\\" dmsetup create cdata --table \\\"0 65536 lineal /dev/sdc 8192\\\" dmsetup create corig --table \\\"0 524288 lineal /dev/sdc $262144\\\" dmsetup create cache --table \\\"0 524288 cach\u00e9 /dev/mapper/cmeta \\\\ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\\\" Registros del kernel: (snip) device-mapper: array: array_block_check failed: blocknr 0 != wanted 10 device-mapper: block manager: array validator check failed for block 10 device-mapper: array: get_ablock failed device-mapper: cache metadata: dm_array_cursor_next for mapping failed ------------[ corte aqu\u00ed ]------------ \u00a1ERROR del kernel en drivers/md/dm-bufio.c:638! Se corrige configurando el puntero de bloque en cach\u00e9 en NULL en caso de errores. Adem\u00e1s del reproductor descrito anteriormente, esta correcci\u00f3n se puede verificar utilizando la prueba \\\"array_cursor/damaged\\\" en dm-unit: dm-unit run /pdata/array_cursor/damaged --kernel-dir \"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-672\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.9\",\"versionEndExcluding\":\"5.4.290\",\"matchCriteriaId\":\"CDDBE6F1-8581-48FF-B380-654BBB91C6AC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.234\",\"matchCriteriaId\":\"F732162B-ED7E-4367-A5C2-B24FD9B0D33B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.177\",\"matchCriteriaId\":\"71A3AFDC-A3CA-454F-8917-E998BBDE36F8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.125\",\"matchCriteriaId\":\"9AFD566B-ECC6-46F1-92F7-12A615D5685F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.72\",\"matchCriteriaId\":\"33E12097-C88A-45B4-9677-2A961A08DD3E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.10\",\"matchCriteriaId\":\"02D604F6-10D1-4F7B-A022-0888406A1121\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"62567B3C-6CEE-46D0-BC2E-B3717FBF7D13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"5A073481-106D-4B15-B4C7-FB0213B8E1D4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"DE491969-75AE-4A6B-9A58-8FC5AF98798F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"93C0660D-7FB8-4FBA-892A-B064BA71E49E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"034C36A6-C481-41F3-AE9A-D116E5BE6895\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"8AF9DC49-2085-4FFB-A7E3-73DFAFECC7F2\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/017c4470bff53585370028fec9341247bad358ff\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6002bec5354f86d1a2df21468f68e3ec03ede9da\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/738994872d77e189b2d13c501a1d145e95d98f46\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9c7c03d0e926762adf3a3a0ba86156fb5e19538b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e477021d252c007f0c6d45b5d13d341efed03979\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f2893c0804d86230ffb8f1c8703fdbb18648abc8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fc1ef07c3522e257e32702954f265debbcb096a7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}"
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.