🛡️ UBUNTU-CVE-2025-26596
⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A heap overflow flaw was found in X.Org and Xwayland. The computation of the length in XkbSizeKeySyms() differs from what is written in XkbWriteKeySyms(), which may lead to a heap-based buffer overflow.

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-02-25
Updated 2026-06-15
Modified 2026-04-22
Fix URL N/A

Affected Packages

Software From version Fixed in
xorg-server 2:21.1.16-1ubuntu1
xorg-server-hwe-16.04 2:1.19.6-1ubuntu4.1~16.04.6+esm9
xorg-server-hwe-18.04 2:1.20.8-2ubuntu2.2~18.04.11+esm4
xwayland 2:23.2.6-1ubuntu0.4

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