X.Org Server GLX Extension Use-After-Free Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of X.Org Server. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the CommonMakeCurrent...

X.org: xorg-x11-server: GLX contextTags Use-After-Free in CommonMakeCurrent()

A flaw was found in the X.org X11 server, specifically within the GLX OpenGL Extension to the X Window System dispatch layer. A remote attacker can exploit this vulnerability by sending a series of crafted X11 requests. This can lead to a use-after-free condition, where the server attempts to wri...

AZL-92072 CVE-2026-56000 affecting package xorg-x11-server 1.20.10-6

Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to CommonMakeCurrent pointing into potentially reallocated memory...

AZL-92265 CVE-2026-56000 affecting package xorg-x11-server-Xwayland for versions less than 24.1.13-1

Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to CommonMakeCurrent pointing into potentially reallocated memory...

CVE-2026-56000

Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to CommonMakeCurrent pointing into potentially reallocated memory...

CVE-2026-56000

Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to CommonMakeCurrent pointing into potentially reallocated memory...

CVE-2026-56000 xorg-x11-server / xwayland GLX contextTags Use-After-Free in CommonMakeCurrent()

Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to CommonMakeCurrent pointing into potentially reallocated memory...

CVE-2026-56000

CVE-2026-56000 affects the X.org X server stack: specifically xorg-x11-server and xwayland. A Use-After-Free in CommonMakeCurrent() exposes heap corruption when GLX commit data is processed over an X connection, due to a pointer into memory that may be reallocated. Impact is described as local/pr...

SUSE-SU-2026:2787-1 Security update for xwayland

This update for xwayland fixes the following issues - CVE-2026-55999: glamor Font Atlas Heap Buffer Overflow bsc1268893. - CVE-2026-56000: GLX contextTags Use-After-Free in CommonMakeCurrent bsc1268894...

CVE-2026-56000: Use After Free

Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to CommonMakeCurrent pointing into potentially reallocated memory...