xorg-x11-server security update

1.20.11-34.3 - CVE fix for CVE-2026-55999 Resolves: https://redhat.atlassian.net/browse/RHEL-191493...

[SECURITY] Fedora 44 Update: xorg-x11-server-21.1.24-1.fc44

X.Org X11 X server...

xorg-x11-server-Xwayland security, bug fix, and enhancement update

An update is available for xorg-x11-server-Xwayland. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Xwayland is an X server for running X clients under Wayland...

xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...

EUVD-2026-25230

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...

Wayland Protocol XkbSetCompatMap DoS

The vulnerability of the XkbSetCompatMap function in the Wayland protocol implementation for X.Org XWayland, as well as in the X.Org Server implementation of the X Window System, is related to a numerical overflow condition. Exploiting this vulnerability can allow an attacker to cause a service...

Privilege Escalation

kernel is vulnerable to privilege escalation. The vulnerability exists when an application has a stack overflow, the stack could silently overwrite another memory mapped area instead of a segmentation fault occurring, which could cause an application to execute arbitrary code, possibly leading to...