CVEvulnerability

CVE-2025-26601

7.8 HIGH Published 2025-02-25 Modified 2026-06-29 Official page ↗
Status
Modified
Published
2025-02-25
Last modified
2026-06-29
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-416

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.

Affected configurations

• tigervnc tigervnc • x.org x server (< 21.1.16) • x.org xwayland (< 24.1.6) • redhat enterprise linux 7.0 • redhat enterprise linux 8.0 • redhat enterprise linux 9.0

Related

Weakness · CWE (1)

References