🛡️ UBUNTU-CVE-2025-26601
⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A use-after-free flaw was found in X.Org and Xwayland. When changing an alarm, the values of the change mask are evaluated one after the other, changing the trigger values as requested, and eventually, SyncInitTrigger() is called. If one of the changes triggers an error, the function will return early, not adding the new sync object, possibly causing a use-after-free when the alarm eventually triggers.

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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