Debian/xwayland: high 7.8
Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a heap buffer overflow via SetFont due to missing glyph
Action: Upgrade xwayland to 2:24.1.13-1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 2:24.1.13-1 | - |
Fixed versions
| 2:24.1.13-1 |
Sources
- osv: DEBIAN-CVE-2026-55999#Debian:14/xwayland
- https://security-tracker.debian.org/tracker/CVE-2026-55999
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