CVE-2026-89485High· 7.0▾ TwilightA flaw was found in the `lockd` component of the Linux kernel. This use-after-free vulnerability occurs in the `nlm_traverse_files()` function when a file's memory is prematurely released while an iterator still holds a pointer to it. A re…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 38.5 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 5.3
none → medium
— → 5.3
none → medium
— → 9.8
none → critical
9.8 → 5.3
critical → medium
5.3 → 9.8
medium → critical
0.2% → 0.7%
Last analysed / modified upstream
9.8 → 7
critical → high
A flaw was found in the lockd component of the Linux kernel. This use-after-free vulnerability occurs in the nlm_traverse_files() function when a file's memory is prematurely released while an iterator still holds a pointer to it. A remote attacker could potentially exploit this to cause system instability or a denial of service (DoS) by triggering a concurrent file release during a specific unlock window.
kernel: lockd: pin next file across nlm_inspect_file lock-drop — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-18.
Affected:
No fix planned:
Not affected:
Affected
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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