GHSA-H2VP-F72R-628F

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-05-11 21:31
VLAI?
Details

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 ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-43209"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T12:16:40Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-h2vp-f72r-628f",
  "modified": "2026-05-11T21:31:30Z",
  "published": "2026-05-06T12:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43209"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1efc128ee4adbc23e082715425ff895449d233bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2bb588cede1c1969e49c0a2822c8cb8b346b7682"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/31fefc18096cdc5549cfa54964d90e0b3229aedc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/66c7c239c65341f99ae388d4d53dc9df2bcb9925"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c97a6ddc95690a938ded44b4e3202f03f15078c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a051ecf5c5b0387840dc210413ed3bc7fbdaa69c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d791c544efd6b9c944b43cf7f502e5bcb02fb941"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f57ccd4657c7f082dc47e5b9e18a883bb5f9118f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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