{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"
            },
            {
              "fixed": "a051ecf5c5b0387840dc210413ed3bc7fbdaa69c"
            },
            {
              "fixed": "d791c544efd6b9c944b43cf7f502e5bcb02fb941"
            },
            {
              "fixed": "66c7c239c65341f99ae388d4d53dc9df2bcb9925"
            },
            {
              "fixed": "2bb588cede1c1969e49c0a2822c8cb8b346b7682"
            },
            {
              "fixed": "f57ccd4657c7f082dc47e5b9e18a883bb5f9118f"
            },
            {
              "fixed": "31fefc18096cdc5549cfa54964d90e0b3229aedc"
            },
            {
              "fixed": "1efc128ee4adbc23e082715425ff895449d233bc"
            },
            {
              "fixed": "8c97a6ddc95690a938ded44b4e3202f03f15078c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.12"
            },
            {
              "fixed": "5.10.252"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.202"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.165"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.128"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.75"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.16"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43209.json"
  },
  "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": "CVE-2026-43209",
  "modified": "2026-07-08T05:37:03.288011387Z",
  "published": "2026-05-06T11:28:12.965Z",
  "references": [
    {
      "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"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43209.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43209"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "minix: Add required sanity checking to minix_check_superblock()"
}