CVE-2025-26601 — Xorg: xwayland: use-after-free in syncinittrigger()
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 re…
Published: 2025-02-25 · CVSS: 7.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7