CVE-2026-50262

CVE-2026-50262 · Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds read/write in glx changedrawableattributes

This page contains facts from public vulnerability sources. Check the original advisory before updating.

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

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.

CVSS 5.5 · Medium · EPSS 0.1% · Fix available

Published: 2026-06-05T10:36:43.916Z
Updated: 2026-09-28T11:55:59.393Z

Stack: system

Affected products and versions

red hat enterprise linux 10
Versions
- ≥ 0:24.1.9-4.el10_2.2: Not affected (rpm)
No fix published
red hat enterprise linux 10.0 extended update support
Versions
- ≥ 0:24.1.5-6.el10_0.1: Not affected (rpm)
No fix published
red hat enterprise linux 6 extended lifecycle support - extension
Versions
- ≥ 0:1.1.0-25.el6_10.18: Not affected (rpm)
No fix published
red hat enterprise linux 7 extended lifecycle support
Versions
- ≥ 0:1.20.4-35.el7_9: Not affected (rpm)
No fix published
red hat enterprise linux 7 extended lifecycle support
Versions
- ≥ 0:1.8.0-36.el7_9.5: Not affected (rpm)
No fix published
red hat enterprise linux 8
Versions
- ≥ 0:21.1.3-20.el8_10.2: Not affected (rpm)
No fix published
red hat enterprise linux 8
Versions
- ≥ 0:1.20.11-28.el8_10.2: Not affected (rpm)
No fix published
red hat enterprise linux 8
Versions
- ≥ 0:1.15.0-10.el8_10: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 advanced mission critical update support
Versions
- ≥ 0:1.20.10-5.el8_4: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 advanced mission critical update support
Versions
- ≥ 0:1.11.0-8.el8_4.16: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 extended update support long-life add-on
Versions
- ≥ 0:1.20.10-5.el8_4: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 extended update support long-life add-on
Versions
- ≥ 0:1.11.0-8.el8_4.16: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
Versions
- ≥ 0:1.20.11-8.el8_6: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
Versions
- ≥ 0:21.1.3-2.el8_6.7: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
Versions
- ≥ 0:1.12.0-6.el8_6.18: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 extended update support long-life add-on
Versions
- ≥ 0:1.20.11-8.el8_6: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 extended update support long-life add-on
Versions
- ≥ 0:21.1.3-2.el8_6.7: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 extended update support long-life add-on
Versions
- ≥ 0:1.12.0-6.el8_6.18: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
Versions
- ≥ 0:1.20.11-19.el8_8: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
Versions
- ≥ 0:21.1.3-13.el8_8.1: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
Versions
- ≥ 0:1.12.0-15.el8_8.18: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 update services for sap solutions
Versions
- ≥ 0:1.20.11-19.el8_8: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 update services for sap solutions
Versions
- ≥ 0:21.1.3-13.el8_8.1: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 update services for sap solutions
Versions
- ≥ 0:1.12.0-15.el8_8.18: Not affected (rpm)
No fix published

Original sources

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