Infinite loop in Linux kernel - CVE-2026-80532
Published: August 27, 2026
Vulnerability identifier: #VU145956
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80532
CWE-ID: CWE-835
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper handling of circular linked-list references in xrep_iunlink_resolve_bucket when processing next_unlinked pointers during online fsck. A local user can trigger a crafted unlinked inode chain to cause a denial of service.
The issue can lead to an infinite loop while reconstructing unlinked list pointers.
Affected software
Linux kernel
How to mitigate CVE-2026-80532
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3