Out-of-bounds read in Linux kernel - #VU135292
Published: June 25, 2026
Vulnerability identifier: #VU135292
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in dlm_match_regions() when comparing local and remote region entries from a DLM_QUERY_REGION message. A remote attacker can send a crafted network message to disclose sensitive information.
This issue is caused by an off-by-one condition in the comparison loop.
Remediation
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/1f8b91275912cd428289c1fb424bebd7ff5302bd
- https://git.kernel.org/stable/c/3c2d0de23ae4be22b6c18e8f0915be74d3b5fb21
- https://git.kernel.org/stable/c/3f474c33ebc2e2ca3fcb587d7de4375348f13373
- https://git.kernel.org/stable/c/6c6e8fc3c007319981647b410c29bb5775048551
- https://git.kernel.org/stable/c/7ab3fbb01bc6d79091bc375e5235d360cd9b78be
- https://git.kernel.org/stable/c/d3d5efade0c79dac1cac98c0cb1115432f804439
- https://git.kernel.org/stable/c/f37de46149db49abd2b24f4f0c5a88cf4dfb5f47
- https://git.kernel.org/stable/c/f69551139caf6d24242a0ad049ee46b264e3aee0