RLSA-2026:98535: Important: qt5-qtbase security update

Published Nov 13, 2026
·
Updated

Qt is a software toolkit for developing applications. The qt5-base packages contain base tools for string, xml, and network handling in Qt.

Security Fix(es):

qt: qt: Denial of Service via crafted XML parsing in QXmlStreamReader (CVE-2026-16762)

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.

Affected Software

18 affected componentsFixes available
rocky-linux/qt5-qtbase<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-debuginfo<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-debugsource<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-devel<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-devel-debuginfo<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-examples<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-examples-debuginfo<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-gui<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-gui-debuginfo<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-mysql<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-mysql-debuginfo<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-odbc<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-odbc-debuginfo<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-postgresql<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-postgresql-debuginfo<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-private-devel<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-static<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2
rocky-linux/qt5-qtbase-common<0:5.15.9-12.el9_9.2
0:5.15.9-12.el9_9.2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade rocky-linux/qt5-qtbase to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  2. Upgrade

    Upgrade rocky-linux/qt5-qtbase-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  3. Upgrade

    Upgrade rocky-linux/qt5-qtbase-debugsource to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  4. Upgrade

    Upgrade rocky-linux/qt5-qtbase-devel to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  5. Upgrade

    Upgrade rocky-linux/qt5-qtbase-devel-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  6. Upgrade

    Upgrade rocky-linux/qt5-qtbase-examples to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  7. Upgrade

    Upgrade rocky-linux/qt5-qtbase-examples-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  8. Upgrade

    Upgrade rocky-linux/qt5-qtbase-gui to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  9. Upgrade

    Upgrade rocky-linux/qt5-qtbase-gui-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  10. Upgrade

    Upgrade rocky-linux/qt5-qtbase-mysql to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  11. Upgrade

    Upgrade rocky-linux/qt5-qtbase-mysql-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  12. Upgrade

    Upgrade rocky-linux/qt5-qtbase-odbc to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  13. Upgrade

    Upgrade rocky-linux/qt5-qtbase-odbc-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  14. Upgrade

    Upgrade rocky-linux/qt5-qtbase-postgresql to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  15. Upgrade

    Upgrade rocky-linux/qt5-qtbase-postgresql-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  16. Upgrade

    Upgrade rocky-linux/qt5-qtbase-private-devel to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  17. Upgrade

    Upgrade rocky-linux/qt5-qtbase-static to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2
  18. Upgrade

    Upgrade rocky-linux/qt5-qtbase-common to a version that resolves this vulnerability.

    Fixed in 0:5.15.9-12.el9_9.2

Event History

Nov 13, 2026
Advisory Published
via OSV·12:04 PM
Data Sourced
via OSV·12:04 PM
DescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What conditions are required for exploitation?

The issue is remotely exploitable with low attack complexity and requires neither privileges nor user interaction. An attacker would need to provide crafted XML to an application using QXmlStreamReader.

2

Which Rocky Linux packages are covered by this update?

The advisory covers qt5-qtbase and related debuginfo, debugsource, devel, examples, and GUI packages listed in the software field.

3

Does the advisory provide a fixed package version or workaround?

No fixed version or temporary mitigation is provided in the advisory data. It identifies this as a security update for the affected Qt 5 base packages.

Company

Resources

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