Debian/xorg-server: medium 5.5
A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, lea
Action: Upgrade xorg-server to 2:21.1.16-1.3+deb13u3 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 2:21.1.16-1.3+deb13u3 | - |
Fixed versions
| 2:21.1.16-1.3+deb13u3 |
Sources
- osv: DEBIAN-CVE-2026-50263#Debian:13/xorg-server
- https://security-tracker.debian.org/tracker/CVE-2026-50263
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