CVE-2026-56000

Name
CVE-2026-56000
Description
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.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
meissner@suse.de https://gitlab.freedesktop.org/xorg/xserver/-/commit/2779affbdb4354e894f490e56f962527d6125043
meissner@suse.de https://www.openwall.com/lists/oss-security/2026/07/08/2

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:* x_server >= None < 21.2.24
cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:* xwayland >= None < 24.1.13

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
xwayland edge-community 24.1.13-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland edge-community 24.1.12-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland edge-community 24.1.11-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland edge-community 24.1.10-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland edge-community 24.1.9-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland edge-community 24.1.8-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland edge-community 24.1.7-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland edge-community 24.1.6-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland edge-community 24.1.5-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland edge-community 24.1.4-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland edge-community 23.2.5-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland edge-community 23.2.4-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland edge-community 23.2.2-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland edge-community 22.1.8-r0 psykose <alice@ayaya.dev> fixed
xwayland edge-community 22.1.6-r0 psykose <alice@ayaya.dev> fixed
xwayland edge-community 21.1.4-r0 None possibly vulnerable
xwayland edge-community 21.1.0-r4 None possibly vulnerable
xwayland 3.24-community 24.1.13-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xwayland 3.24-community 24.1.12-r0 Simon Zeni <simon@bl4ckb0ne.ca> fixed
xorg-server edge-community 21.1.24-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xorg-server 3.24-community 21.1.24-r0 Natanael Copa <ncopa@alpinelinux.org> fixed