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libx11

An out-of-bounds read vulnerability exists in libX11's X Input Method (XIM) trigger-key registration parser before version 1.8.14. This flaw could be exploited by a malicious X server to crash connected X clients, causing a denial of service. The vulnerability has a medium severity rating with a CVSS score of 5.5. Fixes are available in updated libx11 package versions across multiple Ubuntu releases.

CVE-2026-94284 is an out-of-bounds read vulnerability in libX11's XIM trigger-key registration parser affecting libX11 versions prior to 1.8.14. A malicious X server could exploit this flaw to cause libX11 to crash attached X clients, resulting in denial of service. The issue is one of several libX11 vulnerabilities fixed in Ubuntu security notices, with patches released for various Ubuntu LTS versions. The vulnerability does not provide evidence of code execution but can cause application crashes.

An out-of-bounds read vulnerability exists in libX11's X Input Method (XIM) trigger-key registration parser before version 1.8.14. This flaw could be exploited by a malicious X server to crash connected X clients, causing a denial of service. The vulnerability has a medium severity rating with a CVS

An out-of-bounds read vulnerability in libX11's XIM trigger-key registration parser in libX11 before 1.8.14 could be used by malicious X servers to… (CVE-2026-94284)

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