Skip to content
OpenAdvisories
Medium RHSA-2026:65993 1 CVE

Red Hat Security Advisory: qt5-qtbase security update

Published Sep 10, 2026 · Updated Oct 2, 2026

Ecosystem: Red Hat

Fixed packages 28

ReleasePackageFixed in
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-common 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-debugsource 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-devel 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-devel-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-examples 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-examples-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-gui 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-gui-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-mysql 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-mysql-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-odbc 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-odbc-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-postgresql 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-postgresql-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-private-devel 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::appstream qt5-qtbase-tests-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::crb qt5-qtbase-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::crb qt5-qtbase-debugsource 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::crb qt5-qtbase-devel-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::crb qt5-qtbase-examples-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::crb qt5-qtbase-gui-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::crb qt5-qtbase-mysql-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::crb qt5-qtbase-odbc-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::crb qt5-qtbase-postgresql-debuginfo 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::crb qt5-qtbase-static 0:5.15.9-11.el9_8.1
Red Hat · RHEL 9 enterprise_linux:9::crb qt5-qtbase-tests-debuginfo 0:5.15.9-11.el9_8.1

Vulnerabilities 1

  • Medium 6.3
    CVE-2026-9499

    Out-of-bounds read in QTextCodec::codecForName() in Qt

    An out-of-bounds read (buffer over-read) vulnerability exists in QTextCodec::codecForName() in Qt. When the function is called with a QByteArray that is not NUL-terminated (for example, one created with QByteArray::fromRawData()), the codec-name matching rout…

    Qt Project Qt qtbase-opensource-src qtbase-opensource-src Debian Ubuntu

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2503641
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_65993.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-9499
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-9499
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-9499
  • article
    https://codereview.qt-project.org/c/qt/qt5compat/+/723911
  • article
    https://codereview.qt-project.org/c/qt/qt5compat/+/724348
  • article
    https://codereview.qt-project.org/c/qt/qt5compat/+/724995
  • article
    https://codereview.qt-project.org/c/qt/tqtc-qt5compat/+/725112