CVE-2026-46070 (GCVE-0-2026-46070)
Vulnerability from cvelistv5
Published
2026-05-27 12:57
Modified
2026-06-14 17:52
Summary
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.
Impacted products
Vendor Product Version
Linux Linux Version: b4c625c67362b3940f619c1a836b4e8329106658
Version: b4c625c67362b3940f619c1a836b4e8329106658
Version: b4c625c67362b3940f619c1a836b4e8329106658
Version: b4c625c67362b3940f619c1a836b4e8329106658
Version: b4c625c67362b3940f619c1a836b4e8329106658
Version: b4c625c67362b3940f619c1a836b4e8329106658
Version: b4c625c67362b3940f619c1a836b4e8329106658
Version: b4c625c67362b3940f619c1a836b4e8329106658
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid5: validate payload size before accessing journal metadata\n\nr5c_recovery_analyze_meta_block() and\nr5l_recovery_verify_data_checksum_for_mb() iterate over payloads in a\njournal metadata block using on-disk payload size fields without\nvalidating them against the remaining space in the metadata block.\n\nA corrupted journal contains payload sizes extending beyond the PAGE_SIZE\nboundary can cause out-of-bounds reads when accessing payload fields or\ncomputing offsets.\n\nAdd bounds validation for each payload type to ensure the full payload\nfits within meta_size before processing."
        }
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
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        }
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      "providerMetadata": {
        "dateUpdated": "2026-06-14T17:52:06.614Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        {
          "url": "https://git.kernel.org/stable/c/c96c6f01d84b5c67db1bf1cc8591c0b7146826fc"
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        {
          "url": "https://git.kernel.org/stable/c/ef4851d8324fd978ca1ff9ec76a275438f887743"
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          "url": "https://git.kernel.org/stable/c/28d3ff7109c66e99dc1b7cddacb5c760849620ef"
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          "url": "https://git.kernel.org/stable/c/c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e"
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        {
          "url": "https://git.kernel.org/stable/c/b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9"
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      ],
      "title": "md/raid5: validate payload size before accessing journal metadata",
      "x_generator": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46070",
    "datePublished": "2026-05-27T12:57:54.345Z",
    "dateReserved": "2026-05-13T15:03:33.095Z",
    "dateUpdated": "2026-06-14T17:52:06.614Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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