# CVE-2026-109090: libXi XGetDeviceControl DEVICE_ENABLE Heap Buffer Overflow

CVE-2026-109090 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-109090, released November 3, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-109090
- Priority: High
- CVSS: 7.5 (Important)
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 27, 2026
- Weakness: Heap-based Buffer Overflow
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109090

## Description

A malicious X server could cause a heap overflow by injecting a large DEVICE_ENABLE reply when processed by libXi before 1.8.4.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libXi RHEL 10 | 1.8.1-7.el10_2.3 | [RHSA-2026:93441](https://patchblox.com/security/data/fix/linux/rhsa-2026-93441.md) | Nov 3, 2026 |
| Linux | libXi RHEL 8 | 0:1.7.10-4.el8_10 | [RHSA-2026:93438](https://patchblox.com/security/data/fix/linux/rhsa-2026-93438.md) | Nov 3, 2026 |
| Linux | libXi RHEL 9 | 0:1.7.10-8.el9_8.3 | [RHSA-2026:93439](https://patchblox.com/security/data/fix/linux/rhsa-2026-93439.md) | Nov 3, 2026 |
| Linux | libXi almalinux 10 | 1.8.1-7.el10_2.3 | [ALSA-2026:93441](https://patchblox.com/security/data/fix/linux/alsa-2026-93441.md) | Nov 7, 2026 |
| Linux | libXi almalinux 8 | 1.7.10-4.el8_10 | [ALSA-2026:93438](https://patchblox.com/security/data/fix/linux/alsa-2026-93438.md) | Nov 7, 2026 |
| Linux | libXi almalinux 9 | 1.7.10-8.el9_8.3 | [ALSA-2026:93439](https://patchblox.com/security/data/fix/linux/alsa-2026-93439.md) | Nov 7, 2026 |
| Linux | libXi ol 10 | 0:1.8.1-7.el10_2.3 | [ELSA-2026-93441](https://patchblox.com/security/data/fix/linux/elsa-2026-93441.md) | Nov 7, 2026 |
| Linux | libXi ol 8 | 0:1.7.10-4.el8_10 | [ELSA-2026-93438](https://patchblox.com/security/data/fix/linux/elsa-2026-93438.md) | Nov 7, 2026 |
| Linux | libXi ol 9 | 0:1.7.10-8.el9_8.3 | [ELSA-2026-93439](https://patchblox.com/security/data/fix/linux/elsa-2026-93439.md) | Nov 7, 2026 |
| Linux | libXi rocky 10 | 0:1.8.1-7.el10_2.3 | [RLSA-2026:93441](https://patchblox.com/security/data/fix/linux/rlsa-2026-93441.md) | Nov 7, 2026 |
| Linux | libXi rocky 8 | 0:1.7.10-4.el8_10 | [RLSA-2026:93438](https://patchblox.com/security/data/fix/linux/rlsa-2026-93438.md) | Nov 7, 2026 |
| Linux | libXi rocky 9 | 0:1.7.10-8.el9_8.3 | [RLSA-2026:93439](https://patchblox.com/security/data/fix/linux/rlsa-2026-93439.md) | Nov 7, 2026 |
| Linux | libXi-devel RHEL 8 | 0:1.7.10-4.el8_10 | [RHSA-2026:93438](https://patchblox.com/security/data/fix/linux/rhsa-2026-93438.md) | Nov 3, 2026 |
| Linux | libXi-devel RHEL 9 | 0:1.7.10-8.el9_8.3 | [RHSA-2026:93439](https://patchblox.com/security/data/fix/linux/rhsa-2026-93439.md) | Nov 3, 2026 |
| Linux | libXi-devel almalinux 10 | 1.8.1-7.el10_2.3 | [ALSA-2026:93441](https://patchblox.com/security/data/fix/linux/alsa-2026-93441.md) | Nov 7, 2026 |
| Linux | libXi-devel almalinux 8 | 1.7.10-4.el8_10 | [ALSA-2026:93438](https://patchblox.com/security/data/fix/linux/alsa-2026-93438.md) | Nov 7, 2026 |
| Linux | libXi-devel almalinux 9 | 1.7.10-8.el9_8.3 | [ALSA-2026:93439](https://patchblox.com/security/data/fix/linux/alsa-2026-93439.md) | Nov 7, 2026 |
| Linux | libXi-devel ol 10 | 0:1.8.1-7.el10_2.3 | [ELSA-2026-93441](https://patchblox.com/security/data/fix/linux/elsa-2026-93441.md) | Nov 7, 2026 |
| Linux | libXi-devel ol 8 | 0:1.7.10-4.el8_10 | [ELSA-2026-93438](https://patchblox.com/security/data/fix/linux/elsa-2026-93438.md) | Nov 7, 2026 |
| Linux | libXi-devel ol 9 | 0:1.7.10-8.el9_8.3 | [ELSA-2026-93439](https://patchblox.com/security/data/fix/linux/elsa-2026-93439.md) | Nov 7, 2026 |
| Linux | libxi Debian 14 | 2:1.8.4-1 | [DEBIAN-CVE-2026-109090](https://patchblox.com/security/data/fix/linux/debian-cve-2026-109090.md) | Nov 3, 2026 |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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