Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-80538
Published: August 27, 2026
Vulnerability identifier: #VU145953
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80538
CWE-ID: CWE-703
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause filesystem integrity loss and a denial of service.
The vulnerability exists due to improper error handling in xfs_rtginode_ensure in fs/xfs/xfs_rtalloc.c when processing realtime group inode loading during growfs operations. A local user can trigger an error condition so that growfs continues with the realtime group inode unset to cause filesystem integrity loss and a denial of service.
The issue occurs because errors from xfs_rtginode_load other than -ENOENT are treated as success.
Affected software
Linux kernel
How to mitigate CVE-2026-80538
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3