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CVE-2026-7007 Division by zero in Zephyr ext2 superblock parsing allows DoS via crafted filesystem image

🗓️ 24 Jul 2026 13:48:24Reported by zephyrType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

CVE-2026-7007: Zephyr ext2 mount can divide by zero if sBlocksPerGroup or sInodesPerGroup is zero, causing DoS on ARM Cortex M.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-7007
24 Jul 202613:48
attackerkb
CVE
CVE-2026-7007
24 Jul 202613:48
cve
EUVD
EUVD-2026-48588
24 Jul 202613:48
euvd
NVD
CVE-2026-7007
24 Jul 202615:19
nvd
Vulnrichment
CVE-2026-7007 Division by zero in Zephyr ext2 superblock parsing allows DoS via crafted filesystem image
24 Jul 202613:48
vulnrichment
[
  {
    "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",
        "lessThan": "4.5.0",
        "versionType": "semver"
      }
    ]
  }
]

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