CVE-2026-98872Medium· 4.4▾ SunlitA flaw was found in the Linux kernel's FreeVxFS filesystem driver. When encountering an unrecognized extent type in an on-disk structure, the driver triggers a fatal kernel panic instead of handling the error cleanly. A local user can expl…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 24.2 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 25.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
Last analysed / modified upstream
— → 4.4
none → medium
A flaw was found in the Linux kernel's FreeVxFS filesystem driver. When encountering an unrecognized extent type in an on-disk structure, the driver triggers a fatal kernel panic instead of handling the error cleanly. A local user can exploit this flaw by querying file block mappings on a specially crafted filesystem, resulting in a system crash and a Denial of Service (DoS).
kernel: freevxfs: don't BUG() on unknown typed-extent type — rated Moderate by Red Hat. Released 2026-10-23, updated 2026-10-26.
Affected:
No fix planned:
Not affected:
Out of support scope
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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