Vulnerability · Published Oct 27, 2026 · Assigned by suse
CVE-2026-109089libXi XGetDeviceControl Control Type Mismatch Heap Buffer Overflow
High 7.5
In plain English
A high-severity heap buffer overflow in libXi from X.Org. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.3%top 82.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A buffer overflow when handling DEVICE_RESOLUTION in libXi before 1.8.4 could overflow a heap, triggered by a malicious X server.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | libXi | 1.8.1-7.el10_2.3 | ALSA-2026:93441 |
| AlmaLinux:8 | libXi | 1.7.10-4.el8_10 | ALSA-2026:93438 |
| AlmaLinux:9 | libXi | 1.7.10-8.el9_8.3 | ALSA-2026:93439 |
| AlmaLinux:10 | libXi-devel | 1.8.1-7.el10_2.3 | ALSA-2026:93441 |
| AlmaLinux:8 | libXi-devel | 1.7.10-4.el8_10 | ALSA-2026:93438 |
| AlmaLinux:9 | libXi-devel | 1.7.10-8.el9_8.3 | ALSA-2026:93439 |
| Alpine:v3.24 | libxi | 1.8.4-r0 | ALPINE-CVE-2026-109089 |
| Debian:12 | libxi | no fix listed | DEBIAN-CVE-2026-109089 |
| Debian:13 | libxi | no fix listed | DEBIAN-CVE-2026-109089 |
| Debian:14 | libxi | 2:1.8.4-1 | DEBIAN-CVE-2026-109089 |
| Rocky Linux:10 | libXi | 0:1.8.1-7.el10_2.3 | RLSA-2026:93441 |
| Rocky Linux:8 | libXi | 0:1.7.10-4.el8_10 | RLSA-2026:93438 |
| Rocky Linux:9 | libXi | 0:1.7.10-8.el9_8.3 | RLSA-2026:93439 |
| Ubuntu:22.04:LTS | libxi | no fix listed | UBUNTU-CVE-2026-109089 |
| Ubuntu:24.04:LTS | libxi | no fix listed | UBUNTU-CVE-2026-109089 |
| Ubuntu:26.04:LTS | libxi | no fix listed | UBUNTU-CVE-2026-109089 |
| Ubuntu:26.10 | libxi | no fix listed | UBUNTU-CVE-2026-109089 |
Affected products (as reported)
Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H