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CVE-2026-43067 ext4: handle wraparound when searching for blocks for indirect mapped blocks

🗓️ 05 May 2026 15:23:26Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 30 Views

CVE-2026-43067: ext4 clamps group scanning to prevent wraparound when locating blocks for indirect mapped files.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ext4/mballoc.c"
    ],
    "versions": [
      {
        "version": "9d89b9d55e25cb340c5b4b769876edc551b7a9ff",
        "lessThan": "f89bba144938921a2249237ad04a0183ff3f8930",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1b0edd6022a3f44ce87fea9959a9310f4628fbea",
        "lessThan": "83170a05908b6cf2fb3235d3065bf613ff866f3c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9eea2f57d11b30049ff996ac3eff6e0dc8089e5f",
        "lessThan": "4bec4a498ce86314d470ae6144120461f2138c29",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "34c803edc0b3365a42efcf9815acab63b4cf54e0",
        "lessThan": "12624c5b724a81e14e532972b40d863b0de3b7d1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "321ed8d559c951e71ad2d2d69a4cf0445644e865",
        "lessThan": "2a368ccddfc492a0aa951e2caef2985f20e96503",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4865c768b563deff1b6a6384e74a62f143427b42",
        "lessThan": "bb81702370fad22c06ca12b6e1648754dbc37e0f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "16fce6b6c0b247258c6c217fce5a48abf50f6964",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5.15.203",
        "lessThan": "5.16",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ext4/mballoc.c"
    ],
    "versions": [
      {
        "version": "6.1.167",
        "lessThan": "6.1.168",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.6.130",
        "lessThan": "6.6.134",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.12.77",
        "lessThan": "6.12.80",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.18.14",
        "lessThan": "6.18.21",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.19.4",
        "lessThan": "6.19.11",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  }
]

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