SB20260905133 - Infinite loop in Linux kernel xfs scrub
Published: September 5, 2026
Security Bulletin ID
SB20260905133
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Infinite loop (CVE-ID: CVE-2026-80820)
CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
CVSSv4: 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]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper handling of circular linked lists in the XFS scrub unlinked inode list traversal when online filesystem checking processes an unlinked inode list containing a loop. A local user can cause online filesystem checking to traverse the circular list to cause a denial of service.
Remediation
Install update from vendor's website.