Bug 2565128 (CVE-2026-100140)

Summary: CVE-2026-100140 qt6: Integer overflow vulnerability in XML parsing functionality of Qt5Compat impacts Qt
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in Qt. An integer overflow vulnerability exists in the XML (Extensible Markup Language) parsing functionality within the QXmlSimpleReader component. A local attacker could exploit this flaw by enticing a user or application to process specially crafted XML input. Successful exploitation leads to memory corruption, causing an application crash and resulting in a Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2565260, 2565261, 2565262    
Bug Blocks:    

Description OSIDB Bzimport 2026-11-02 12:01:27 UTC
An integer overflow vulnerability in the Qt XML parsing (Qt5Compat / QXmlSimpleReader) functionality of Qt.