vulnerability
Ubuntu: (Multiple Advisories) (CVE-2025-26601): X.Org X Server vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | Feb 25, 2025 | Feb 26, 2025 | Aug 18, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
Feb 25, 2025
Added
Feb 26, 2025
Modified
Aug 18, 2025
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.
Solutions
ubuntu-pro-upgrade-xserver-xorg-coreubuntu-pro-upgrade-xserver-xorg-core-hwe-16-04ubuntu-pro-upgrade-xserver-xorg-core-hwe-18-04ubuntu-pro-upgrade-xwaylandubuntu-pro-upgrade-xwayland-hwe-16-04ubuntu-pro-upgrade-xwayland-hwe-18-04
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