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md/raid5: validate payload size before accessing journal metadata

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: md/raid5: validate payload size before accessing journal metadata r5c_recovery_analyze_meta_block() and r5l_recovery_verify_data_checksum_for_mb() iterate over payloads in a journal metadata block using on-disk payload size fields without validating them against the remaining space in the metadata block. A corrupted journal contains payload sizes extending beyond the PAGE_SIZE boundary can cause out-of-bounds reads when accessing payload fields or computing offsets. Add bounds validation for each payload type to ensure the full payload fits within meta_size before processing.

Announced Source revision 1
Original source ↗

CVE-2026-46070

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-2026-46070

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": "b4c625c67362b3940f619c1a836b4e8329106658",
        "lessThan": "c96c6f01d84b5c67db1bf1cc8591c0b7146826fc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b4c625c67362b3940f619c1a836b4e8329106658",
        "lessThan": "ef4851d8324fd978ca1ff9ec76a275438f887743",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b4c625c67362b3940f619c1a836b4e8329106658",
        "lessThan": "28d3ff7109c66e99dc1b7cddacb5c760849620ef",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b4c625c67362b3940f619c1a836b4e8329106658",
        "lessThan": "33698bd1b2db9764a29df7751533d33967ff5c98",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b4c625c67362b3940f619c1a836b4e8329106658",
        "lessThan": "c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b4c625c67362b3940f619c1a836b4e8329106658",
        "lessThan": "73ce72edd113374801045924d4417199963f73a3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b4c625c67362b3940f619c1a836b4e8329106658",
        "lessThan": "406aa86394ead347c47428fb51b6359bdaa2257d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b4c625c67362b3940f619c1a836b4e8329106658",
        "lessThan": "b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/md/raid5-cache.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.10"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.10",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.258",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.209",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.175",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.140",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.86",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.27",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.0.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.0.*"
      },
      {
        "status": "unaffected",
        "version": "7.1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/md/raid5-cache.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-46070

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#40113 · Revision 1
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Publisher date
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