| Name | CVE-2025-26594 |
| Description | A use-after-free flaw was found in X.Org and Xwayland. The root cursor is referenced in the X server as a global variable. If a client frees the root cursor, the internal reference points to freed memory and causes a use-after-free. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1098906, 1098907 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| xorg-server (PTS) | bullseye | 2:1.20.11-1+deb11u13 | vulnerable |
| bullseye (security) | 2:1.20.11-1+deb11u14 | vulnerable |
| bookworm, bookworm (security) | 2:21.1.7-3+deb12u8 | vulnerable |
| sid, trixie | 2:21.1.15-3 | vulnerable |
| xwayland (PTS) | bookworm | 2:22.1.9-1 | vulnerable |
| sid, trixie | 2:24.1.5-1 | vulnerable |
The information below is based on the following data on fixed versions.
Notes
[bookworm] - xwayland <ignored> (Minor issue; Xwayland shouldn't be running as root)
https://lists.x.org/archives/xorg-announce/2025-February/003584.html
Fixed by: https://gitlab.freedesktop.org/xorg/xserver/-/commit/01642f263f12becf803b19be4db95a4a83f94acc
Fixed by: https://gitlab.freedesktop.org/xorg/xserver/-/commit/b0a09ba6020147961acc62d9c73d807b4cccd9f7