An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.
References
| Link | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-50262 | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2485387 | Issue Tracking Vendor Advisory |
| https://gitlab.freedesktop.org/xorg/xserver/-/commit/6d459e4daf715bea8abdafa8fb130be2f8a1d145 | Patch |
| https://lists.x.org/archives/xorg-announce/2026-June/003702.html | Mailing List Vendor Advisory |
| https://redhat.atlassian.net/browse/PSIRTSUPT-16950 | Permissions Required |
Configurations
Configuration 1 (hide)
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History
15 Jun 2026, 13:40
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Redhat enterprise Linux
Redhat X.org X.org xwayland X.org x Server |
|
| CPE | cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
|
| References | () https://access.redhat.com/security/cve/CVE-2026-50262 - Vendor Advisory | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=2485387 - Issue Tracking, Vendor Advisory | |
| References | () https://gitlab.freedesktop.org/xorg/xserver/-/commit/6d459e4daf715bea8abdafa8fb130be2f8a1d145 - Patch | |
| References | () https://lists.x.org/archives/xorg-announce/2026-June/003702.html - Mailing List, Vendor Advisory | |
| References | () https://redhat.atlassian.net/browse/PSIRTSUPT-16950 - Permissions Required |
05 Jun 2026, 12:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-05 12:16
Updated : 2026-06-15 13:40
NVD link : CVE-2026-50262
Mitre link : CVE-2026-50262
CVE.ORG link : CVE-2026-50262
JSON object : View
Products Affected
x.org
- x_server
- xwayland
redhat
- enterprise_linux
CWE
CWE-125
Out-of-bounds Read