Description
The GLX extension in X.Org xserver 1.7.7 allows remote authenticated users to cause a denial of service (server crash) and possibly execute arbitrary code via (1) a crafted request that triggers a client swap in glx/glxcmdsswap.c; or (2) a crafted length or (3) a negative value in the screen field in a request to glx/glxcmds.c.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | xorg-server | 2:1.9.99.902-1 | — |
| Debian 13 | xorg-server | 2:1.9.99.902-1 | — |
| Debian 12 | xorg-server | 2:1.9.99.902-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | xorg-x11-server +8 | 1.7.7-29.el6_1.2 | RHSA-2011:1359 |
| RHEL 5 | xorg-x11-server +7 | 1.1.1-48.76.el5_7.5 | RHSA-2011:1359 |
| RHEL 4 | xorg-x11 +17 | 6.8.2-1.EL.70 | RHSA-2011:1360 |
Advisories 2
- RHSA-2011:1359 Red Hat Security Advisory: xorg-x11-server security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2011:1360 Red Hat Security Advisory: xorg-x11 security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- https://bugs.freedesktop.org/show_bug.cgi?id=28823
- [oss-security] 20110923 Re: CVE Request: Missing input sanitation in various X GLX calls mailing-list
- RHSA-2011:1359 vendor-advisory
- RHSA-2011:1360 vendor-advisory
- [oss-security] 20110923 Re: CVE Request: Missing input sanitation in various X GLX calls mailing-list
- [oss-security] 20110922 CVE Request: Missing input sanitation in various X GLX calls mailing-list
- http://cgit.freedesktop.org/xorg/xserver/commit?id=3f0d3f4d97bce75c1828635c322b6560a45a037f
- https://bugzilla.redhat.com/show_bug.cgi?id=740954
- http://cgit.freedesktop.org/xorg/xserver/commit?id=ec9c97c6bf70b523bc500bd3adf62176f1bb33a4
- http://cgit.freedesktop.org/xorg/xserver/commit?id=6c69235a9dfc52e4b4e47630ff4bab1a820eb543