CVE-2026-34003

CVE-2026-34003 · Xorg: xwayland: x.org x server: information exposure and denial of service via out-of-bounds memory access

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.

A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash, leading to a Denial of Service (DoS). In certain configurations, higher impact outcomes may be possible.

CVSS 7.8 · High · EPSS 0.2% · Fix available

Published: 2026-04-23T14:54:05.479Z
Updated: 2026-07-15T01:04:50.788Z

Stack: system

Affected products and versions

red hat enterprise linux 10
Versions
- ≥ 0:24.1.5-6.el10_1: Not affected (rpm)
No fix published
red hat enterprise linux 10
Versions
- ≥ 0:24.1.9-4.el10_2: Not affected (rpm)
No fix published
red hat enterprise linux 10.0 extended update support
Versions
- ≥ 0:24.1.5-6.el10_0: Not affected (rpm)
No fix published
red hat enterprise linux 6 extended lifecycle support - extension
Versions
- ≥ 0:1.1.0-25.el6_10.16: Not affected (rpm)
No fix published
red hat enterprise linux 7 extended lifecycle support
Versions
- ≥ 0:1.20.4-34.el7_9: Not affected (rpm)
No fix published
red hat enterprise linux 7 extended lifecycle support
Versions
- ≥ 0:1.8.0-36.el7_9.4: Not affected (rpm)
No fix published
red hat enterprise linux 8
Versions
- ≥ 0:21.1.3-20.el8_10: Not affected (rpm)
No fix published
red hat enterprise linux 8
Versions
- ≥ 0:1.20.11-28.el8_10: Not affected (rpm)
No fix published
red hat enterprise linux 8
Versions
- ≥ 0:1.15.0-9.el8_10: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 advanced mission critical update support
Versions
- ≥ 0:1.20.10-4.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_4.15: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 extended update support long-life add-on
Versions
- ≥ 0:1.20.10-4.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_4.15: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
Versions
- ≥ 0:21.1.3-2.el8_6.6: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
Versions
- ≥ 0:1.20.11-7.el8_6: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
Versions
- ≥ 0:1.12.0-6.el8_6.17: 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_6.17: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 telecommunications update service
Versions
- ≥ 0:21.1.3-2.el8_6.6: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 telecommunications update service
Versions
- ≥ 0:1.20.11-7.el8_6: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 update services for sap solutions
Versions
- ≥ 0:21.1.3-2.el8_6.6: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 update services for sap solutions
Versions
- ≥ 0:1.20.11-7.el8_6: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
Versions
- ≥ 0:21.1.3-13.el8_8: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
Versions
- ≥ 0:1.20.11-18.el8_8: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
Versions
- ≥ 0:1.12.0-15.el8_8.17: Not affected (rpm)
No fix published

Original sources

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