| Name | CVE-2025-62231 |
| Description | A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a crash. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4353-1, DSA-6044-1 |
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+deb11u17 | fixed | |
| bookworm | 2:21.1.7-3+deb12u10 | vulnerable | |
| bookworm (security) | 2:21.1.7-3+deb12u11 | fixed | |
| trixie | 2:21.1.16-1.3 | vulnerable | |
| trixie (security) | 2:21.1.16-1.3+deb13u1 | fixed | |
| forky, sid | 2:21.1.20-1 | fixed | |
| xwayland (PTS) | bookworm | 2:22.1.9-1 | vulnerable |
| trixie | 2:24.1.6-1 | vulnerable | |
| forky, sid | 2:24.1.8-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| xorg-server | source | bullseye | 2:1.20.11-1+deb11u17 | DLA-4353-1 | ||
| xorg-server | source | bookworm | 2:21.1.7-3+deb12u11 | DSA-6044-1 | ||
| xorg-server | source | trixie | 2:21.1.16-1.3+deb13u1 | DSA-6044-1 | ||
| xorg-server | source | (unstable) | 2:21.1.20-1 | |||
| xwayland | source | (unstable) | (unfixed) |
[trixie] - xwayland <ignored> (Minor issue; Xwayland shouldn't be running as root)
[bookworm] - xwayland <ignored> (Minor issue; Xwayland shouldn't be running as root)
https://lists.x.org/archives/xorg-announce/2025-October/003635.html
Fixed by: https://gitlab.freedesktop.org/xorg/xserver/-/commit/475d9f49acd0e55bc0b089ed77f732ad18585470
Fixed by: https://gitlab.freedesktop.org/xorg/xserver/-/commit/3baad99f9c15028ed8c3e3d8408e5ec35db155aa (xorg-server-21.1.19)