SB2026052822 - Deadlock in Linux kernel jbd2
Published: May 28, 2026
Security Bulletin ID
SB2026052822
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) Deadlock (CVE-ID: CVE-2026-46061)
CWE-ID: CWE-833 - Deadlock
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 a deadlock condition in jbd2_journal_cancel_revoke() when handling filesystem operations on filesystems with a block size smaller than the page size. A local user can trigger the deadlock to cause a denial of service.
The issue can cause the system to hang.
Remediation
Install update from vendor's website.