CVE-2026-89675High· 7.0▾ TwilightA flaw was found in the Linux kernel's nfsd component. A race condition exists during asynchronous copy cancellation and shutdown operations, which can lead to a Use-After-Free (UAF) vulnerability. This allows an async copy object to be fr…
▾ 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%
0.2% → 0.4%
— → 6.4
none → medium
— → 9.8
none → critical
9.8 → 6.4
critical → medium
6.4 → 9.8
medium → critical
9.8 → 6.4
critical → medium
Last analysed / modified upstream
6.4 → 7
medium → high
A flaw was found in the Linux kernel's nfsd component. A race condition exists during asynchronous copy cancellation and shutdown operations, which can lead to a Use-After-Free (UAF) vulnerability. This allows an async copy object to be freed or used after being freed, potentially causing memory corruption and system instability. This issue arises when a teardown caller races with the copy kernel thread, leading to incorrect memory management.
kernel: nfsd: fix UAF in async copy cancel and shutdown — rated Important by Red Hat. Released 2026-09-11, updated 2026-09-21.
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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