PT-2026-52948 · Linux+2 · Linux Kernel+2

CVE-2026-53309

·

Published

2026-06-26

·

Updated

2026-09-10

CVSS v3.1

9.8

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description An off-by-one error exists in the dlm match regions() function within the ocfs2/dlm component. The local-vs-remote region comparison loop incorrectly uses the <= operator instead of <, which leads to an out-of-bounds read of one entry beyond the valid range of qr regions.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Found an issue in the description? Have something to add? Feel free to write us 👾
dbugs@ptsecurity.com

Weakness Enumeration

CWE-193

Related Identifiers

CVE-2026-53309
ECHO-7C66-F781-939C
USN-8566-1
USN-8567-1
USN-8568-1
USN-8569-1
USN-8574-1
USN-8574-2
USN-8574-3
USN-8575-1
USN-8575-2
USN-8575-3
USN-8576-1
USN-8576-2
USN-8593-1
USN-8595-1
USN-8595-2
USN-8595-3
USN-8596-1
USN-8603-1
USN-8606-1
USN-8607-1
USN-8608-1
USN-8609-1
USN-8610-1
USN-8618-1
USN-8619-1
USN-8620-1
USN-8620-2
USN-8620-3
USN-8620-4
USN-8644-1
USN-8644-2
USN-8644-3
USN-8645-1
USN-8646-1
USN-8663-1
USN-8664-1
USN-8665-1
USN-8668-1
USN-8714-1
USN-8714-2
USN-8715-1
USN-8725-1
USN-8728-1
USN-8748-1

Affected Products

Linuxmint
Linux Kernel
Ubuntu