Out-of-bounds read in libXi's XI2 class parser
CVE-2026-93543 is fixed in 3 products on 1 platform, first by RHSA-2026:91004, released September 24, 2026. It is not reported as exploited. Patch Radar priority: High.
X.Org X11 libXi runtime library Security Fix(es): * libXi: libXi: Denial of Service via out-of-bounds read in XI2 class parser (CVE-2026-93543) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libXi · RHEL 10 | 1.8.1-7.el10_2.1 | RHSA-2026:91004 | Sep 24, 2026 |
| libXi · RHEL 8 | 0:1.7.10-2.el8_10 | RHSA-2026:91268 | Oct 29, 2026 |
| libXi · RHEL 9 | 0:1.7.10-8.el9_8.1 | RHSA-2026:91056 | Oct 30, 2026 |
| libXi · almalinux 10 | 1.8.1-7.el10_2.1 | ALSA-2026:91004 | Nov 7, 2026 |
| libXi · almalinux 8 | 1.7.10-2.el8_10 | ALSA-2026:91268 | Nov 7, 2026 |
| libXi · almalinux 9 | 1.7.10-8.el9_8.1 | ALSA-2026:91056 | Nov 7, 2026 |
| libXi · ol 10 | 0:1.8.1-7.el10_2.1 | ELSA-2026-91004 | Nov 7, 2026 |
| libXi · ol 8 | 0:1.7.10-2.el8_10 | ELSA-2026-91268 | Nov 7, 2026 |
| libXi · ol 9 | 0:1.7.10-8.el9_8.1 | ELSA-2026-91056 | Nov 7, 2026 |
| libXi · opensuse-leap 16.0 | 1.8.2-160000.4.1 | OPENSUSE-SU-2026:22054-1 | Nov 7, 2026 |
| libXi · rocky 10 | 0:1.8.1-7.el10_2.1 | RLSA-2026:91004 | Nov 7, 2026 |
| libXi · rocky 8 | 0:1.7.10-2.el8_10 | RLSA-2026:91268 | Nov 7, 2026 |
| libXi · rocky 9 | 0:1.7.10-8.el9_8.1 | RLSA-2026:91056 | Nov 7, 2026 |
| libXi · sles 16.0 | 1.8.2-160000.4.1 | SUSE-SU-2026:24203-1 | Nov 7, 2026 |
| libXi-devel · RHEL 8 | 0:1.7.10-2.el8_10 | RHSA-2026:91268 | Oct 29, 2026 |
| libXi-devel · RHEL 9 | 0:1.7.10-8.el9_8.1 | RHSA-2026:91056 | Oct 30, 2026 |
| libXi-devel · almalinux 10 | 1.8.1-7.el10_2.1 | ALSA-2026:91004 | Nov 7, 2026 |
| libXi-devel · almalinux 8 | 1.7.10-2.el8_10 | ALSA-2026:91268 | Nov 7, 2026 |
| libXi-devel · almalinux 9 | 1.7.10-8.el9_8.1 | ALSA-2026:91056 | Nov 7, 2026 |
| libXi-devel · ol 10 | 0:1.8.1-7.el10_2.1 | ELSA-2026-91004 | Nov 7, 2026 |
| libXi-devel · ol 8 | 0:1.7.10-2.el8_10 | ELSA-2026-91268 | Nov 7, 2026 |
| libXi-devel · ol 9 | 0:1.7.10-8.el9_8.1 | ELSA-2026-91056 | Nov 7, 2026 |
| libxi · Debian 14 | 2:1.8.4-1 | DEBIAN-CVE-2026-93543 | Sep 24, 2026 |
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