CVE-2026-43209 (GCVE-0-2026-43209)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:28 – Updated: 2026-05-07 17:14
VLAI?
Title
minix: Add required sanity checking to minix_check_superblock()
Summary
In the Linux kernel, the following vulnerability has been resolved: minix: Add required sanity checking to minix_check_superblock() The fs/minix implementation of the minix filesystem does not currently support any other value for s_log_zone_size than 0. This is also the only value supported in util-linux; see mkfs.minix.c line 511. In addition, this patch adds some sanity checking for the other minix superblock fields, and moves the minix_blocks_needed() checks for the zmap and imap also to minix_check_super_block(). This also closes a related syzbot bug report.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a051ecf5c5b0387840dc210413ed3bc7fbdaa69c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d791c544efd6b9c944b43cf7f502e5bcb02fb941 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 66c7c239c65341f99ae388d4d53dc9df2bcb9925 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2bb588cede1c1969e49c0a2822c8cb8b346b7682 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f57ccd4657c7f082dc47e5b9e18a883bb5f9118f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 31fefc18096cdc5549cfa54964d90e0b3229aedc (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1efc128ee4adbc23e082715425ff895449d233bc (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8c97a6ddc95690a938ded44b4e3202f03f15078c (git)
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    Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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              "status": "unaffected",
              "version": "0",
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nminix: Add required sanity checking to minix_check_superblock()\n\nThe fs/minix implementation of the minix filesystem does not currently\nsupport any other value for s_log_zone_size than 0. This is also the\nonly value supported in util-linux; see mkfs.minix.c line 511. In\naddition, this patch adds some sanity checking for the other minix\nsuperblock fields, and moves the minix_blocks_needed() checks for the\nzmap and imap also to minix_check_super_block().\n\nThis also closes a related syzbot bug report."
        }
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      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "dateReserved": "2026-05-01T14:12:55.993Z",
    "dateUpdated": "2026-05-07T17:14:43.716Z",
    "state": "PUBLISHED"
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  }
}


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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

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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.