CVE-2026-94282 Out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion
A malicious X server can crash an attached X client via an out-of-bounds read in libXi's cookie conversion logic.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-94282?
CVE-2026-94282 is a medium-severity memory corruption vulnerability in x.org libXi, published on 28 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
An out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion in libXi before 1.8.4 could be used by malicious X server to crash an attached X client.
Weakness: CWE-125
Which versions are affected by CVE-2026-94282?
Linux distribution packages (2)
libXi Red Hat:hummingbird:1 | All versions | 0:1.8.4-0.1.hum1 |
libXi-devel Red Hat:hummingbird:1 | All versions | 0:1.8.4-0.1.hum1 |
How do I fix CVE-2026-94282?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-94282 being exploited?
There is no known exploitation of CVE-2026-94282 in the wild and no public exploit code.
Sources
Also known as ALPINE-CVE-2026-94282, AZL-104966, BELL-CVE-2026-94282, DEBIAN-CVE-2026-94282, ECHO-8d91-c1db-4b26, GHSA-p77j-q345-2f8c and 2 more.