Description
The ProcPutImage function in dix/dispatch.c in X.Org Server (aka xserver and xorg-server) before 1.16.4 allows attackers to cause a denial of service (divide-by-zero and crash) via a zero-height PutImage request.
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 | 2:1.16.4-1 | — |
| Debian 13 | xorg-server | 2:1.16.4-1 | — |
| Debian 12 | xorg-server | 2:1.16.4-1 | — |
| Debian 6.0 | xorg-server | 2:1.7.7-18+deb6u3 | DLA-120-2 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | xorg-server | 2:1.15.1-0ubuntu2.4 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | xorg-x11-server +8 | 1.15.0-36.el6 | RHBA-2015:1445 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | xorg-x11-server | 7.6_1.15.2-28.4 | SUSE-SU-2015:1127-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | xorg-x11-server | 7.6_1.15.2-28.4 | SUSE-SU-2015:1127-1 |
Advisories 3
- RHBA-2015:1445 Red Hat Bug Fix Advisory: xorg-x11-server bug fix and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DLA-120-2 xorg-server - regression update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2015:1127-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026