CVE-2026-46061
kernel: jbd2: fix deadlock in jbd2_journal_cancel_revoke()
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 27, 2026
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel's journaling block device (jbd2) subsystem. A lock ordering issue within the jbd2_journal_cancel_revoke() function can lead to a deadlock under specific conditions, particularly when the filesystem blocksize is smaller than the pagesize. This vulnerability could allow a local user or process to trigger a system hang, resulting in a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-833 · Deadlock