| Name | CVE-2025-5455 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1108474, 1108475 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| qt6-base (PTS) | bookworm | 6.4.2+dfsg-10 | vulnerable |
| trixie, sid | 6.8.2+dfsg-8 | fixed | |
| qtbase-opensource-src (PTS) | bullseye | 5.15.2+dfsg-9+deb11u1 | vulnerable |
| bookworm | 5.15.8+dfsg-11+deb12u3 | vulnerable | |
| trixie, sid | 5.15.15+dfsg-6 | fixed | |
| qtbase-opensource-src-gles (PTS) | bullseye | 5.15.2+dfsg-4 | fixed |
| bookworm | 5.15.8+dfsg-3 | fixed | |
| trixie, sid | 5.15.15+dfsg-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| qt6-base | source | (unstable) | 6.8.2+dfsg-8 | 1108474 | ||
| qtbase-opensource-src | source | (unstable) | 5.15.15+dfsg-6 | 1108475 | ||
| qtbase-opensource-src-gles | source | (unstable) | (not affected) |
[bookworm] - qt6-base <no-dsa> (Minor issue)
[bookworm] - qtbase-opensource-src <no-dsa> (Minor issue)
[bullseye] - qtbase-opensource-src <postponed> (Minor issue; DoS for local user)
- qtbase-opensource-src-gles <not-affected> (GLES package not affected, see #1108476)
https://codereview.qt-project.org/c/qt/qtbase/+/642006