OESA-2026-4612

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OESA-2026-4612

Summary: qt6-qtbase security update

Details: Qt is a software toolkit for developing applications. Security Fix(es): Uncontrolled recursion (CWE-674) in the QDomDocument/QDomNode serialization path of the Qt XML module (QtXml, qtbase). QDomElementPrivate::save() and QDomNodePrivate::save() recurse mutually, consuming one stack frame per level of element nesting with no depth limit, no configurable bound and no error return. A document with deeply nested elements parses successfully but exhausts the call stack and terminates the process when serialized. Reachable via QDomDocument::toByteArray() (Qt 4.0 and later), QDomDocument::toString(), QDomDocument::toCString(), QDomNode::save(), and operator<<(QTextStream&, const QDomNode&). Denial of service only — no code execution and no memory disclosure.(CVE-2026-11573)

References: https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4612, https://nvd.nist.gov/vuln/detail/CVE-2026-11573