Description
Multiple buffer overflows in X.org libXxf86dga 1.1.3 and earlier allow X servers to cause a denial of service (crash) and possibly execute arbitrary code via crafted length or index values to the (1) XDGAQueryModes and (2) XDGASetMode functions.
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 | libxxf86dga | 2:1.1.3-2+deb7u1 | — |
| Debian 13 | libxxf86dga | 2:1.1.3-2+deb7u1 | — |
| Debian 12 | libxxf86dga | 2:1.1.3-2+deb7u1 | — |
| Debian 7 | libxxf86dga | 2:1.1.3-2+deb7u1 | DSA-2690-1 |
| Debian 6.0 | libxxf86dga | 2:1.1.1-2+squeeze1 | DSA-2690-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | libX11 +2 | 1.6.0-2.2.el6 | RHSA-2014:1436 |
| RHEL 6 | libXcursor +1 | 1.1.14-2.1.el6 | RHSA-2014:1436 |
| RHEL 6 | libXext +1 | 1.3.2-2.1.el6 | RHSA-2014:1436 |
| RHEL 6 | libXfixes +1 | 5.0.1-2.1.el6 | RHSA-2014:1436 |
| RHEL 6 | libXi +1 | 1.7.2-2.2.el6 | RHSA-2014:1436 |
| RHEL 6 | libXp +1 | 1.0.2-2.1.el6 | RHSA-2014:1436 |
| RHEL 6 | libXrandr +1 | 1.4.1-2.1.el6 | RHSA-2014:1436 |
| RHEL 6 | libXrender +1 | 0.9.8-2.1.el6 | RHSA-2014:1436 |
| RHEL 6 | libXres +1 | 1.0.7-2.1.el6 | RHSA-2014:1436 |
| RHEL 6 | libXt +1 | 1.1.4-6.1.el6 | RHSA-2014:1436 |
| RHEL 6 | libXtst +1 | 1.2.2-2.1.el6 | RHSA-2014:1436 |
| RHEL 6 | libXv +1 | 1.0.9-2.1.el6 | RHSA-2014:1436 |
| RHEL 6 | libXvMC +1 | 1.0.8-2.1.el6 | RHSA-2014:1436 |
| RHEL 6 | libXxf86dga +1 | 1.1.4-2.1.el6 | RHSA-2014:1436 |
| RHEL 6 | libXxf86vm +3 | 1.1.3-2.1.el6 | RHSA-2014:1436 |
| RHEL 6 | libdmx +1 | 1.1.3-3.el6 | RHSA-2014:1436 |
| RHEL 6 | libxcb +3 | 1.9.1-2.el6 | RHSA-2014:1436 |
| RHEL 6 | xcb-proto | 1.8-3.el6 | RHSA-2014:1436 |
| RHEL 6 | xkeyboard-config +1 | 2.11-1.el6 | RHSA-2014:1436 |
| RHEL 6 | xorg-x11-proto-devel | 7.7-9.el6 | RHSA-2014:1436 |
| RHEL 6 | xorg-x11-xtrans-devel | 1.3.4-1.el6 | RHSA-2014:1436 |
Advisories 2
- RHSA-2014:1436 Red Hat Security Advisory: X11 client libraries security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2690-1 libxxf86dga - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-2690 vendor-advisory
- USN-1869-1 vendor-advisory
- [oss-security] 20130523 Fwd: [ANNOUNCE] X.Org Security Advisory: Protocol handling issues in X Window System client libraries mailing-list
- FEDORA-2013-9085 vendor-advisory
- http://www.x.org/wiki/Development/Security/Advisory-2013-05-23