> USN-8939-1: libXtst vulnerabilities

[SOURCE] Ubuntu Security Notices [DATE: 19/10/2026 17:17] [LANGUAGE: EN]

It was discovered that libXtst did not properly handle certain RECORD
replies from the X server. A malicious X server could possibly use this
issue to cause libXtst clients to crash, resulting in a denial of service.
(CVE-2026-94286)

Tobias Stoeckmann discovered that libXtst did not properly handle certain
memory operations. A malicious X server could possibly use this issue to
cause libXtst to access memory out of bounds, resulting in a denial of
service. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-7951)

Tobias Stoeckmann discovered that libXtst did not properly handle certain
replies from the X server. A malicious X server could possibly use this
issue to cause libXtst to enter an infinite loop, resulting in a denial of
service. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-7952)

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