A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure.
References
| Link | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-50263 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2485388 | Issue Tracking Third Party Advisory |
| https://gitlab.freedesktop.org/xorg/xserver/-/commit/ecc634f1b2f7aa473d3a267eada98c4918bf9e05 | 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
11 Jun 2026, 19:46
| Type | Values Removed | Values Added |
|---|---|---|
| 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:*:*:*:*:*:*:* |
|
| First Time |
Redhat enterprise Linux
Redhat X.org X.org xwayland X.org x Server |
|
| References | () https://access.redhat.com/security/cve/CVE-2026-50263 - Third Party Advisory | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=2485388 - Issue Tracking, Third Party Advisory | |
| References | () https://gitlab.freedesktop.org/xorg/xserver/-/commit/ecc634f1b2f7aa473d3a267eada98c4918bf9e05 - 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 : 2026-06-11 19:46
NVD link : CVE-2026-50263
Mitre link : CVE-2026-50263
CVE.ORG link : CVE-2026-50263
JSON object : View
Products Affected
x.org
- x_server
- xwayland
redhat
- enterprise_linux
CWE
CWE-416
Use After Free