Out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser
CVE-2026-94283 is fixed in 5 products on 1 platform, first by libx11-6 2:1.8.13-1ubuntu0.1, released September 28, 2026. It is not reported as exploited. Patch Radar priority: Routine.
An out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libX11 · opensuse-leap 16.0 | 1.8.10-160000.5.1 | OPENSUSE-SU-2026:22055-1 | Nov 7, 2026 |
| libX11 · sles 15.6 | 1.8.7-150600.3.11.1 | SUSE-SU-2026:4501-1 | Oct 5, 2026 |
| libX11 · sles 15.7 | 1.8.10-150700.4.8.1 | SUSE-SU-2026:4502-1 | Oct 5, 2026 |
| libX11 · sles 16.0 | 1.8.10-160000.5.1 | SUSE-SU-2026:24201-1 | Nov 7, 2026 |
| libx11 · Debian 14 | 2:1.8.14-1 | DEBIAN-CVE-2026-94283 | Sep 28, 2026 |
| libx11-6 · Ubuntu 18.04.6 LTS (bionic) | 2:1.6.4-3ubuntu0.4+esm3 | libx11-6 2:1.6.4-3ubuntu0.4+esm3 | Oct 13, 2026 |
| libx11-6 · Ubuntu 20.04 LTS (focal) | 2:1.6.9-2ubuntu1.6+esm1 | libx11-6 2:1.6.9-2ubuntu1.6+esm1 | Oct 13, 2026 |
| libx11-6 · Ubuntu 22.04.1 LTS (jammy) | 2:1.7.5-1ubuntu0.4 | libx11-6 2:1.7.5-1ubuntu0.4 | Oct 13, 2026 |
| libx11-6 · Ubuntu 24.04.5 LTS (noble) | 2:1.8.7-1ubuntu0.1 | libx11-6 2:1.8.7-1ubuntu0.1 | Oct 13, 2026 |
| libx11-6 · Ubuntu 26.04.1 LTS (resolute) | 2:1.8.13-1ubuntu0.1 | libx11-6 2:1.8.13-1ubuntu0.1 | Sep 28, 2026 |
| libx11-data · Ubuntu 18.04.6 LTS (bionic) | 2:1.6.4-3ubuntu0.4+esm3 | libx11-data 2:1.6.4-3ubuntu0.4+esm3 | Oct 13, 2026 |
| libx11-data · Ubuntu 20.04 LTS (focal) | 2:1.6.9-2ubuntu1.6+esm1 | libx11-data 2:1.6.9-2ubuntu1.6+esm1 | Oct 13, 2026 |
| libx11-data · Ubuntu 22.04.1 LTS (jammy) | 2:1.7.5-1ubuntu0.4 | libx11-data 2:1.7.5-1ubuntu0.4 | Oct 13, 2026 |
| libx11-data · Ubuntu 24.04.5 LTS (noble) | 2:1.8.7-1ubuntu0.1 | libx11-data 2:1.8.7-1ubuntu0.1 | Oct 13, 2026 |
| libx11-data · Ubuntu 26.04.1 LTS (resolute) | 2:1.8.13-1ubuntu0.1 | libx11-data 2:1.8.13-1ubuntu0.1 | Sep 28, 2026 |
| libx11-xcb1 · Ubuntu 18.04.6 LTS (bionic) | 2:1.6.4-3ubuntu0.4+esm3 | libx11-xcb1 2:1.6.4-3ubuntu0.4+esm3 | Oct 13, 2026 |
| libx11-xcb1 · Ubuntu 20.04 LTS (focal) | 2:1.6.9-2ubuntu1.6+esm1 | libx11-xcb1 2:1.6.9-2ubuntu1.6+esm1 | Oct 13, 2026 |
| libx11-xcb1 · Ubuntu 22.04.1 LTS (jammy) | 2:1.7.5-1ubuntu0.4 | libx11-xcb1 2:1.7.5-1ubuntu0.4 | Oct 13, 2026 |
| libx11-xcb1 · Ubuntu 24.04.5 LTS (noble) | 2:1.8.7-1ubuntu0.1 | libx11-xcb1 2:1.8.7-1ubuntu0.1 | Oct 13, 2026 |
| libx11-xcb1 · Ubuntu 26.04.1 LTS (resolute) | 2:1.8.13-1ubuntu0.1 | libx11-xcb1 2:1.8.13-1ubuntu0.1 | Sep 28, 2026 |
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