Use of Uninitialized Variable in Linux kernel - CVE-2026-97552
Published: September 28, 2026
Vulnerability identifier: #VU152657
CSH Severity: Low
CVSS v4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97552
CWE-ID: CWE-457
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 use of an uninitialized variable in xfs_defer_finish_one() when processing an item-less pending item during an online repair. A local privileged user can trigger processing of an item-less pending item during an online repair to cause a denial of service.
Only kernels built with CONFIG_XFS_ONLINE_REPAIR are affected.
Affected software
Linux kernel
How to mitigate CVE-2026-97552
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3