Description
xorg-x11-server before 1.19.5 had wrong extra length check in ProcXIChangeHierarchy function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The X.Org Foundation | xorg-x11-server | before 1.19.5 | — |
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 | 2:1.19.5-1 | — |
| Debian 13 | xorg-server | 2:1.19.5-1 | — |
| Debian 12 | xorg-server | 2:1.19.5-1 | — |
| Debian 9 | xorg-server | 2:1.19.2-1+deb9u2 | DSA-4000-1 |
| Debian 8 | xorg-server | 2:1.16.4-1+deb8u2 | DSA-4000-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | xorg-server | 2:1.12.4-6+deb7u8 | DLA-1186-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | xorg-server | 2:1.18.4-0ubuntu0.7 | USN-3456-1 |
| Ubuntu 16.04 LTS | xorg-server-hwe-16.04 | 2:1.19.3-1ubuntu1~16.04.4 | USN-3456-1 |
| Ubuntu 14.04 LTS | xorg-server | 2:1.15.1-0ubuntu2.11 | USN-3456-1 |
| Ubuntu 14.04 LTS | xorg-server-lts-xenial | 2:1.18.3-1ubuntu2.3~trusty4 | USN-3456-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | xorg-x11-server | 7.6_1.18.3-76.15.2 | SUSE-SU-2017:3047-1 |
| SLES 12 SP2 | xorg-x11-server | 7.6_1.18.3-76.15.2 | SUSE-SU-2017:3047-1 |
| SLES 11 SP4 | xorg-x11-server | 7.4-27.122.16.1 | SUSE-SU-2017:3025-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | xorg-x11-server | 7.6_1.18.3-76.15.2 | SUSE-SU-2017:3047-1 |
| SLES for SAP 12 SP2 | xorg-x11-server | 7.6_1.18.3-76.15.2 | SUSE-SU-2017:3047-1 |
| SLES for SAP 11 SP4 | xorg-x11-server | 7.4-27.122.16.1 | SUSE-SU-2017:3025-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.23 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.22 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.21 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.20 | xorg-server | 1.19.5-r0 | — |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.18 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.17 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.16 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.15 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.14 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.13 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.12 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.11 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.10 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.9 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.8 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.7 | xorg-server | 1.19.5-r0 | — |
| Alpine v3.6 | xorg-server | 1.19.5-r0 | — |
Advisories 5
- USN-3456-1 xorg-server, xorg-server-hwe-16.04, xorg-server-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4000-1 xorg-server - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1186-1 xorg-server - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:3025-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3047-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026