CVE-2026-50264

Published Jun 5, 2026

Last updated a month ago

Overview

Description
An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the server, or for privilege escalation if the X server runs as root.
Source
secalert@redhat.com
NVD status
Modified
Products
x_server, xwayland, enterprise_linux

Risk scores

CVSS 3.1

Type
Secondary
Base score
7.8
Impact score
5.9
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

secalert@redhat.com
CWE-787
0b0ca135-0b70-47e7-9f44-1890c2a1c46c
CWE-787

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.