# CVE-2026-93543: 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. - Web page: https://patchblox.com/security/cve/CVE-2026-93543 - Priority: High - CVSS: 7.4 (Important) - EPSS: 0.0026 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Sep 24, 2026 - Weakness: Out-of-bounds Read - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-93543 ## Description 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 | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libXi RHEL 10 | 1.8.1-7.el10_2.1 | [RHSA-2026:91004](https://patchblox.com/security/data/fix/linux/rhsa-2026-91004.md) | Sep 24, 2026 | | Linux | libXi RHEL 8 | 0:1.7.10-2.el8_10 | [RHSA-2026:91268](https://patchblox.com/security/data/fix/linux/rhsa-2026-91268.md) | Oct 29, 2026 | | Linux | libXi RHEL 9 | 0:1.7.10-8.el9_8.1 | [RHSA-2026:91056](https://patchblox.com/security/data/fix/linux/rhsa-2026-91056.md) | Oct 30, 2026 | | Linux | libXi almalinux 10 | 1.8.1-7.el10_2.1 | [ALSA-2026:91004](https://patchblox.com/security/data/fix/linux/alsa-2026-91004.md) | Nov 7, 2026 | | Linux | libXi almalinux 8 | 1.7.10-2.el8_10 | [ALSA-2026:91268](https://patchblox.com/security/data/fix/linux/alsa-2026-91268.md) | Nov 7, 2026 | | Linux | libXi almalinux 9 | 1.7.10-8.el9_8.1 | [ALSA-2026:91056](https://patchblox.com/security/data/fix/linux/alsa-2026-91056.md) | Nov 7, 2026 | | Linux | libXi ol 10 | 0:1.8.1-7.el10_2.1 | [ELSA-2026-91004](https://patchblox.com/security/data/fix/linux/elsa-2026-91004.md) | Nov 7, 2026 | | Linux | libXi ol 8 | 0:1.7.10-2.el8_10 | [ELSA-2026-91268](https://patchblox.com/security/data/fix/linux/elsa-2026-91268.md) | Nov 7, 2026 | | Linux | libXi ol 9 | 0:1.7.10-8.el9_8.1 | [ELSA-2026-91056](https://patchblox.com/security/data/fix/linux/elsa-2026-91056.md) | Nov 7, 2026 | | Linux | libXi opensuse-leap 16.0 | 1.8.2-160000.4.1 | [OPENSUSE-SU-2026:22054-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22054-1.md) | Nov 7, 2026 | | Linux | libXi rocky 10 | 0:1.8.1-7.el10_2.1 | [RLSA-2026:91004](https://patchblox.com/security/data/fix/linux/rlsa-2026-91004.md) | Nov 7, 2026 | | Linux | libXi rocky 8 | 0:1.7.10-2.el8_10 | [RLSA-2026:91268](https://patchblox.com/security/data/fix/linux/rlsa-2026-91268.md) | Nov 7, 2026 | | Linux | libXi rocky 9 | 0:1.7.10-8.el9_8.1 | [RLSA-2026:91056](https://patchblox.com/security/data/fix/linux/rlsa-2026-91056.md) | Nov 7, 2026 | | Linux | libXi sles 16.0 | 1.8.2-160000.4.1 | [SUSE-SU-2026:24203-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24203-1.md) | Nov 7, 2026 | | Linux | libXi-devel RHEL 8 | 0:1.7.10-2.el8_10 | [RHSA-2026:91268](https://patchblox.com/security/data/fix/linux/rhsa-2026-91268.md) | Oct 29, 2026 | | Linux | libXi-devel RHEL 9 | 0:1.7.10-8.el9_8.1 | [RHSA-2026:91056](https://patchblox.com/security/data/fix/linux/rhsa-2026-91056.md) | Oct 30, 2026 | | Linux | libXi-devel almalinux 10 | 1.8.1-7.el10_2.1 | [ALSA-2026:91004](https://patchblox.com/security/data/fix/linux/alsa-2026-91004.md) | Nov 7, 2026 | | Linux | libXi-devel almalinux 8 | 1.7.10-2.el8_10 | [ALSA-2026:91268](https://patchblox.com/security/data/fix/linux/alsa-2026-91268.md) | Nov 7, 2026 | | Linux | libXi-devel almalinux 9 | 1.7.10-8.el9_8.1 | [ALSA-2026:91056](https://patchblox.com/security/data/fix/linux/alsa-2026-91056.md) | Nov 7, 2026 | | Linux | libXi-devel ol 10 | 0:1.8.1-7.el10_2.1 | [ELSA-2026-91004](https://patchblox.com/security/data/fix/linux/elsa-2026-91004.md) | Nov 7, 2026 | | Linux | libXi-devel ol 8 | 0:1.7.10-2.el8_10 | [ELSA-2026-91268](https://patchblox.com/security/data/fix/linux/elsa-2026-91268.md) | Nov 7, 2026 | | Linux | libXi-devel ol 9 | 0:1.7.10-8.el9_8.1 | [ELSA-2026-91056](https://patchblox.com/security/data/fix/linux/elsa-2026-91056.md) | Nov 7, 2026 | | Linux | libxi Debian 14 | 2:1.8.4-1 | [DEBIAN-CVE-2026-93543](https://patchblox.com/security/data/fix/linux/debian-cve-2026-93543.md) | Sep 24, 2026 | --- Data as of 2026-11-09T01:18:40Z UTC. 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