CVE-2026-89701Medium· 5.5▾ SunlitA flaw was found in the Linux kernel's Network File System Daemon (nfsd). The TIME_DELEG_ACCESS and TIME_DELEG_MODIFY decode paths do not properly validate the nanosecond (nseconds) value in timestamps. This allows a remote attacker to pro…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · 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%
— → 6.8
none → medium
— → 6.8
none → medium
— → 6.8
none → medium
Last analysed / modified upstream
6.8 → 5.5
A flaw was found in the Linux kernel's Network File System Daemon (nfsd). The TIME_DELEG_ACCESS and TIME_DELEG_MODIFY decode paths do not properly validate the nanosecond (nseconds) value in timestamps. This allows a remote attacker to provide a malformed timestamp, which can then be written to disk, potentially leading to data integrity issues or unexpected system behavior.
kernel: nfsd: validate nseconds in TIME_DELEG decode paths — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-21.
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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