CVE-2025-5455 Affecting qt5-qtbase-debugsource package, versions <0:5.15.9-11.el9_6


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.38% (33rd percentile)

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  • Snyk IDSNYK-ROCKY9-QT5QTBASEDEBUGSOURCE-13290857
  • published5 Oct 2025
  • disclosed2 Jun 2025

Introduced: 2 Jun 2025

CVE-2025-5455  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 qt5-qtbase-debugsource to version 0:5.15.9-11.el9_6 or higher.
This issue was patched in RLSA-2025:9462.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qt5-qtbase-debugsource package and not the qt5-qtbase-debugsource package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:9 relevant fixed versions and status.

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" parameter that lacked a value (such as "data:charset,"), and Qt was built with assertions enabled, then it would hit an assertion, resulting in a denial of service (abort).

This impacts Qt up to 5.15.18, 6.0.0->6.5.8, 6.6.0->6.8.3 and 6.9.0. This has been fixed in 5.15.19, 6.5.9, 6.8.4 and 6.9.1.

CVSS Base Scores

version 3.1