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CVE-2026-64324 udf: validate free block extents against the partition length

🗓️ 25 Jul 2026 08:49:52Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 33 Views

Fix UDF free block extent checks to use partition length and guard the bitmap, preventing kernel panic.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/udf/balloc.c"
    ],
    "versions": [
      {
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        "status": "affected",
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      },
      {
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  },
  {
    "product": "Linux",
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    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/udf/balloc.c"
    ],
    "versions": [
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      },
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        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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