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dm array: fix releasing a faulty array block twice in dm_array_cursor_end

Type: advisorySource: Official CVE List1 source record

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 l

Announced Source revision 1
Original source ↗

CVE-2024-57929

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2024-57929

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "fdd1315aa5f022fe6574efdc2d9535f75a0ee255",
        "lessThan": "9c7c03d0e926762adf3a3a0ba86156fb5e19538b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "fdd1315aa5f022fe6574efdc2d9535f75a0ee255",
        "lessThan": "fc1ef07c3522e257e32702954f265debbcb096a7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "fdd1315aa5f022fe6574efdc2d9535f75a0ee255",
        "lessThan": "738994872d77e189b2d13c501a1d145e95d98f46",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "fdd1315aa5f022fe6574efdc2d9535f75a0ee255",
        "lessThan": "e477021d252c007f0c6d45b5d13d341efed03979",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "fdd1315aa5f022fe6574efdc2d9535f75a0ee255",
        "lessThan": "6002bec5354f86d1a2df21468f68e3ec03ede9da",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "fdd1315aa5f022fe6574efdc2d9535f75a0ee255",
        "lessThan": "017c4470bff53585370028fec9341247bad358ff",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "fdd1315aa5f022fe6574efdc2d9535f75a0ee255",
        "lessThan": "f2893c0804d86230ffb8f1c8703fdbb18648abc8",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/md/persistent-data/dm-array.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.9"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.9",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.4.290",
        "versionType": "semver",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.234",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.177",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.125",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.72",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.10",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.13",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/md/persistent-data/dm-array.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2024-57929

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#26850 · Revision 1
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Publisher date
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