{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-89954",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-89954"
  ],
  "published": "2026-09-16T10:32:03Z",
  "summary": "mtd: afs: validate v2 image info bounds",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: afs: validate v2 image info bounds\n\nThe AFS v2 parser uses footer[8] to locate the image information block\ninside the current erase block, then uses the image information\nregion_count to walk entries from a fixed local array. The footer offset\nand region count come from flash contents and are not checked against the\nerase block or the local image-info array before use.\n\nReject v2 entries whose image information offset would underflow the\nerase block calculation, and reject region counts that cannot fit in the\nlocal image-info array before walking region entries.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.188",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-89954"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1bec05a68414cf8d0cab6cb42445b8603f32ffc4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3ad8ff12fd44b08af9212ac4883a7e29d2ab7348"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/875daa3c750814ff2e2dc050239c390048f0bcd0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/da740539e8f370767317e24615349b9342a6e773"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1edea8900ca3e405c1421d8b5c29f97107874f72"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/18916f475057cbd2fb8ea6ae86e6b85884ad1d53"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d14e6298139f58a87a87d7022e26a7f37f0ddce7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e9290031f736e99ad17c25c00311c92c266843b7"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-16T14:40:32Z"
  }
}