CVE-2026-43228 (GCVE-0-2026-43228)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:28 – Updated: 2026-05-11 22:20
VLAI
Title
hfs: Replace BUG_ON with error handling for CNID count checks
Summary
In the Linux kernel, the following vulnerability has been resolved: hfs: Replace BUG_ON with error handling for CNID count checks In a06ec283e125 next_id, folder_count, and file_count in the super block info were expanded to 64 bits, and BUG_ONs were added to detect overflow. This triggered an error reported by syzbot: if the MDB is corrupted, the BUG_ON is triggered. This patch replaces this mechanism with proper error handling and resolves the syzbot reported bug. Singed-off-by: Jori Koolstra <jkoolstra@xs4all.nl>
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a06ec283e125e334155fe13005c76c9f484ce759 , < b6536c1ced315fa645576d3a39c6e07f2a472962 (git)
Affected: a06ec283e125e334155fe13005c76c9f484ce759 , < b226804532a875c10276168dc55ce752944096bd (git)
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Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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          "programFiles": [
            "fs/hfs/dir.c",
            "fs/hfs/hfs_fs.h",
            "fs/hfs/inode.c",
            "fs/hfs/mdb.c",
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    "dateReserved": "2026-05-01T14:12:55.994Z",
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  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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