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...

xorg-server buffer error vulnerability

xorg-x11-server is an X Window System display server from the X.org Foundation. A security vulnerability exists in xorg-server versions prior to 21.1.10, xwayland versions prior to 23.2.3, which stems from a memory read/write overrun that may be caused by querying or changing an XKB button...

PT-2023-6642 · Unknown +9 · Xorg-X11-Server +9

Name of the Vulnerable Software and Affected Versions: xorg-x11-server affected versions not specified Description: A use-after-free flaw was found in the xorg-x11-server, which can cause an X server crash in a very specific and legacy configuration, known as Zaphod mode, where a multi-screen set...

xorg-x11-server: SProcScreenSaverSuspend out-of-bounds access

A flaw was found in xorg-x11-server where an out-of-bounds access can occur in the SProcScreenSaverSuspend function...

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...

ALPINE-CVE-2017-13721

In X.Org Server aka xserver and xorg-server before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session...