Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-97902
Published: September 28, 2026
Vulnerability identifier: #VU152564
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97902
CWE-ID: CWE-703
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause a denial of service.
The vulnerability exists due to improper error handling in thaw_super_locked() when handling nested filesystem thaw operations. A local privileged user can cause bdev_thaw() to retain an elevated filesystem-freeze count after releasing a freeze hold to cause a denial of service.
The condition occurs when a FIFREEZE freeze is nested with bdev_freeze().
Affected software
Linux kernel
How to mitigate CVE-2026-97902
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3