CVE-2026-64323 udf: validate VAT header length against the VAT inode size

🗓️ 25 Jul 2026 08:49:51Reported by LinuxType

In the Linux kernel, the following vulnerability has been resolved: udf: validate VAT header length against the VAT inode size udf_load_vat() takes the virtual partition's start offset straight fromthe on-disk VAT 2.0 header without checking it ag...

Reporter	Title	Published	Views	Family All 5
CVE	CVE-2026-64323	25 Jul 202608:49	–	cve
Debian CVE	CVE-2026-64323	25 Jul 202608:49	–	debiancve
EUVD	EUVD-2026-49035	25 Jul 202608:49	–	euvd
NVD	CVE-2026-64323	25 Jul 202610:17	–	nvd
Positive Technologies	PT-2026-64544	25 Jul 202600:00	–	ptsecurity

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/udf/super.c"
    ],
    "versions": [
      {
        "version": "fa5e08156335d0687c85b4e724db9448fb166601",
        "lessThan": "0ad2d09a8d66fa8dc6f9b70d660b5fb4478ea934",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fa5e08156335d0687c85b4e724db9448fb166601",
        "lessThan": "883962731420ec271ed8c1cd76524f4b17faa982",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fa5e08156335d0687c85b4e724db9448fb166601",
        "lessThan": "2900e02a0dd4fc30ac9840e7ce4ca0b041ab0d63",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fa5e08156335d0687c85b4e724db9448fb166601",
        "lessThan": "bb0d384c1f42a5b7ace0bd88fee80b9bb1d49acb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fa5e08156335d0687c85b4e724db9448fb166601",
        "lessThan": "55287a3555ff0515b3aff181d2c08c0462a41709",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fa5e08156335d0687c85b4e724db9448fb166601",
        "lessThan": "e610fb113cdfa8bf4247c9bf4f2337b81ad4ddad",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fa5e08156335d0687c85b4e724db9448fb166601",
        "lessThan": "74580fdf022909e184223cacc364feb826982d96",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fa5e08156335d0687c85b4e724db9448fb166601",
        "lessThan": "d8202786b3d75125c84ebc4de6d946f92fde0ee8",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/udf/super.c"
    ],
    "versions": [
      {
        "version": "2.6.26",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.26",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.261",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.212",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.178",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.145",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.96",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.39",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.4",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/74580fdf022909e184223cacc364feb826982d96
git	www.git.kernel.org/stable/c/55287a3555ff0515b3aff181d2c08c0462a41709
git	www.git.kernel.org/stable/c/e610fb113cdfa8bf4247c9bf4f2337b81ad4ddad
git	www.git.kernel.org/stable/c/883962731420ec271ed8c1cd76524f4b17faa982
git	www.git.kernel.org/stable/c/d8202786b3d75125c84ebc4de6d946f92fde0ee8
git	www.git.kernel.org/stable/c/0ad2d09a8d66fa8dc6f9b70d660b5fb4478ea934
git	www.git.kernel.org/stable/c/bb0d384c1f42a5b7ace0bd88fee80b9bb1d49acb
git	www.git.kernel.org/stable/c/2900e02a0dd4fc30ac9840e7ce4ca0b041ab0d63

25 Jul 2026 08:49Current