Bug 2542377 (CVE-2026-94286)

Summary: CVE-2026-94286 libXtst: libXtst: Denial of Service via out-of-bounds read in RECORD reply parser
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in libXtst. An out-of-bounds read vulnerability in the RECORD extension reply parser allows a malicious X server to cause a Denial of Service (DoS) by crashing connected client applications. Under certain conditions, this flaw may also result in limited information disclosure.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2542985    
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Description OSIDB Bzimport 2026-09-28 09:01:50 UTC
An out-of-bounds read in libXtst's RECORD reply parser in libXtst before 1.2.6 could be used by malicious X servers to crash attached X clients.