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OpenAdvisories
Medium ALSA-2025:9486 1 CVE

Moderate: qt6-qtbase security update

Published Jun 24, 2025 · Updated Oct 29, 2026

Summary

Qt is a software toolkit for developing applications. This package contains base tools, like string, xml, and network handling.

Security Fix(es):

* qt5: qt6: QtCore Assertion Failure Denial of Service (CVE-2025-5455)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 1

ReleasePackageFixed in
AlmaLinux · 10 qt6-qtbase-common 6.8.1-9.el10_0

Vulnerabilities 1

  • High 8.4

    Possible denial of service when passing malformed data in a URL to qDecodeDataUrl

    An issue was found in the private API function qDecodeDataUrl() in QtCore, which is used in QTextDocument and QNetworkReply, and, potentially, in user code. If the function was called with malformed data, for example, an URL that contained a "charset" paramet…

References

  • report
    https://access.redhat.com/security/cve/CVE-2025-5455
  • report
    https://bugzilla.redhat.com/2369722
  • advisory
    https://errata.almalinux.org/10/ALSA-2025-9486.html