CVE-2026-89495
kernel: ocfs2: bound namelen in dlm_migrate_request_handler
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 11, 2026
Updated · October 16, 2026
Description
A flaw was found in ocfs2 in the Linux kernel. A malicious or compromised node within a Distributed Lock Manager (DLM) cluster can send specially crafted messages with unchecked length fields. This can lead to a heap out-of-bounds write, potentially allowing for arbitrary code execution, or an out-of-bounds read, which can cause a kernel panic and result 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 · 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')