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CVE-2026-13478 Out-of-bounds read in Zephyr ext2 block-bitmap validation from a crafted s_blocks_count

🗓️ 25 Aug 2026 16:05:39Reported by zephyrType 
cvelist
 cvelist
🔗 www.cve.org👁 38 Views

Out-of-bounds read in Zephyr ext2 filesystem driver via unbounded s_blocks_count causes DoS.

Related
Affected
Refs
[
  {
    "vendor": "zephyrproject",
    "product": "zephyr",
    "collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
    "packageName": "zephyr",
    "defaultStatus": "unaffected",
    "programFiles": [
      "subsys/fs/ext2/ext2_impl.c"
    ],
    "versions": [
      {
        "version": "3.5.0",
        "status": "affected",
        "versionType": "semver",
        "lessThan": "4.4.2"
      }
    ]
  }
]

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