{"schema_version":"1.7.2","id":"OESA-2026-3937","modified":"2026-09-20T13:23:23Z","published":"2026-09-20T13:23:23Z","upstream":["CVE-2026-9499"],"summary":"qt5-qtbase security update","details":"Qt is a software toolkit for developing applications.\r\n\r\nSecurity Fix(es):\n\nAn 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 routine reads past the end of the supplied buffer. In most cases this results in an incorrect text codec being selected; in the worst case, if the over-read reaches unmapped memory, the process crashes (denial of service). The over-read is bounded by the length of the longest codec-name candidate, and the out-of-bounds bytes are only compared internally against Qt's fixed list of codec names, so no data is disclosed to an attacker. Applications that do not pass non-NUL-terminated QByteArrays to QTextCodec::codecForName() are not exposed. The affected code resides in the Qt5Compat module from Qt 6.0.0 onward, and in Qt Core (qtbase) in Qt 4.x and Qt 5.x.(CVE-2026-9499)","affected":[{"package":{"ecosystem":"openEuler:20.03-LTS-SP4","name":"qt5-qtbase","purl":"pkg:rpm/openEuler/qt5-qtbase&distro=openEuler-20.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.11.1-24.oe2003sp4"}]}],"ecosystem_specific":{"aarch64":["qt5-qtbase-5.11.1-24.oe2003sp4.aarch64.rpm","qt5-qtbase-debuginfo-5.11.1-24.oe2003sp4.aarch64.rpm","qt5-qtbase-debugsource-5.11.1-24.oe2003sp4.aarch64.rpm","qt5-qtbase-devel-5.11.1-24.oe2003sp4.aarch64.rpm","qt5-qtbase-gui-5.11.1-24.oe2003sp4.aarch64.rpm","qt5-qtbase-mysql-5.11.1-24.oe2003sp4.aarch64.rpm","qt5-qtbase-odbc-5.11.1-24.oe2003sp4.aarch64.rpm","qt5-qtbase-postgresql-5.11.1-24.oe2003sp4.aarch64.rpm"],"noarch":["qt5-qtbase-common-5.11.1-24.oe2003sp4.noarch.rpm"],"src":["qt5-qtbase-5.11.1-24.oe2003sp4.src.rpm"],"x86_64":["qt5-qtbase-5.11.1-24.oe2003sp4.x86_64.rpm","qt5-qtbase-debuginfo-5.11.1-24.oe2003sp4.x86_64.rpm","qt5-qtbase-debugsource-5.11.1-24.oe2003sp4.x86_64.rpm","qt5-qtbase-devel-5.11.1-24.oe2003sp4.x86_64.rpm","qt5-qtbase-gui-5.11.1-24.oe2003sp4.x86_64.rpm","qt5-qtbase-mysql-5.11.1-24.oe2003sp4.x86_64.rpm","qt5-qtbase-odbc-5.11.1-24.oe2003sp4.x86_64.rpm","qt5-qtbase-postgresql-5.11.1-24.oe2003sp4.x86_64.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3937"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-9499"}],"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"}],"database_specific":{"severity":"Medium"}}