CVE-2026-89677High· 7.0▾ TwilightA flaw was found in the Linux kernel's Network File System Daemon (nfsd). When creating files, the `dentry_create()` function could return an unexpected directory entry (dentry). This could lead to a previously stored dentry being prematur…
▾ 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%
— → 6.8
none → medium
— → 9.8
none → critical
9.8 → 6.8
critical → medium
6.8 → 9.8
medium → critical
9.8 → 6.8
critical → medium
Last analysed / modified upstream
6.8 → 7
medium → high
A flaw was found in the Linux kernel's Network File System Daemon (nfsd). When creating files, the dentry_create() function could return an unexpected directory entry (dentry). This could lead to a previously stored dentry being prematurely freed and then used again, potentially causing memory corruption or a denial of service (DoS) due to an invalid memory access.
kernel: nfsd: fix possible fh_compose of wrong dentry in nfsd4_create_file() — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-15.
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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