Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-89692
Published: September 12, 2026
Vulnerability identifier: #VU149109
CSH Severity: Low
CVSS v4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89692
CWE-ID: CWE-703
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper handling of a failed callback queue operation in nfsd_break_one_deleg() when queuing a delegation recall callback. A remote user can issue a conflicting open or lock after a delegation recall queue failure to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-89692
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3