CVE-2026-89692Medium· 5.5▾ SunlitA flaw was found in the Linux kernel's Network File System (NFS) daemon, `nfsd`. This vulnerability occurs when a delegation recall operation fails, leaving a critical internal flag uncleared. This prevents subsequent attempts to break the…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · 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
0.2% → 0.4%
— → 5.3
none → medium
— → 7.5
none → high
7.5 → 5.3
high → medium
5.3 → 7.5
medium → high
7.5 → 5.3
high → medium
Last analysed / modified upstream
5.3 → 5.5
A flaw was found in the Linux kernel's Network File System (NFS) daemon, nfsd. This vulnerability occurs when a delegation recall operation fails, leaving a critical internal flag uncleared. This prevents subsequent attempts to break the same delegation, leading to a denial of service where file operations or locks can stall indefinitely. This can disrupt access to shared network resources.
kernel: nfsd: clear CALLBACK_RUNNING on failed delegation recall queue — 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.
CVE-2026-89646Medium· 5.5kernel: ceph: fix leaked inode reference on writeback abort at umount (CVE-2026-89646)
CVE-2026-89664High· 7.0kernel: nfsd: release OPEN-decoded posix ACLs via op_release (CVE-2026-89664)
CVE-2026-89645Medium· 5.5kernel: btrfs: drop recovered reloc root refs on recovery failure (CVE-2026-89645)
CVE-2026-89683High· 7.0kernel: nfsd: fix dentry ref leak on V4ROOT export filehandle lookup (CVE-2026-89683)
CVE-2026-80997Medium· 5.5kernel: net: ipa: fix stalled modem TX queue after runtime resume (CVE-2026-80997)
CVE-2026-89500High· 7.0kernel: ring-buffer: Make cpu_buffer::free_page a buffer_data_read_page (CVE-2026-89500)