7.8
High
CVE-2026-93518 X.Org Server XKB ResizeKeyType Numeric Truncation
Description
An integer truncation issue in XkbResizeKeyType() that could lead to a heap buffer overflow by authenticated X clients in X.org X server before 21.1.25 and XWayland before 24.1.14 could be exploited for crashes or potential code execution in the X server.
CVSS 3.1 detail
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitable with local access to the machine, with an ordinary account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- Interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| xorg-x11-server 21.1 | earliest → < 21.1.25 | 21.1.25 |
| xwayland 24.1 | earliest → < 24.1.14 | 24.1.14 |
Other CVEs of xorg-x11-server
The 12 CVEs of xorg-x11-server →
CVE-2026-93536
X.Org Server GestureBuildSprite Use-After-Free
5.3
Medium
CVE-2026-93524
X.Org Server XKB SetMap Key Width/Action Count Desync Out-Of-Bounds Read
6.9
Medium
CVE-2026-93523
X.Org Server XInput2 PassiveUngrabDevice Out-of-Bounds Write
7.8
High
CVE-2026-93522
X.Org Server Glamor CopyArea Heap Buffer Overflow
7.8
High