CVE-2026-55999 — xorg-server / xwayland glamor font atlas Heap Buffer Overflow
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 Set…
Published: 2026-07-08 · CVSS: 8.5 · CVSS 3.1
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 boundary checks.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7