CVE-2021-3481
First published: Mon Feb 22 2021(Updated: )
A flaw was found in Qt. An out-of-bounds read vulnerability was found in QRadialFetchSimd in qt/qtbase/src/gui/painting/qdrawhelper_p.h in Qt/Qtbase. While rendering and displaying a crafted Scalable Vector Graphics (SVG) file this flaw may lead to an unauthorized memory access. The highest threat from this vulnerability is to data confidentiality and the application availability.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/qt | <5.12.11 | 5.12.11 |
| redhat/qt | <5.15.4 | 5.15.4 |
| redhat/qt | <6.0.3 | 6.0.3 |
| redhat/qt | <6.1.0 | 6.1.0 |
| Qt Qt | =5.15.1 | |
| Qt Qt | =6.0.0 | |
| Qt Qt | =6.0.2 | |
| Qt Qt | =6.2.0 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2021-3481
- https://bugreports.qt.io/browse/QTBUG-91507
- https://bugzilla.redhat.com/show_bug.cgi?id=1931444
- https://codereview.qt-project.org/c/qt/qtsvg/+/337646
- https://lists.debian.org/debian-lts-announce/2023/08/msg00028.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1931445
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1931447
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1931444#c4
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1947272
- https://access.redhat.com/errata/RHSA-2021:4172
- https://access.redhat.com/security/cve/cve-2021-3481
Frequently Asked Questions
What is CVE-2021-3481?
CVE-2021-3481 is a vulnerability found in Qt, specifically in QRadialFetchSimd in qt/qtbase/src/gui/painting/qdrawhelper_p.h.
What is the severity of CVE-2021-3481?
The severity of CVE-2021-3481 is high with a CVSS score of 7.1.
How does CVE-2021-3481 occur?
CVE-2021-3481 occurs due to an out-of-bounds read vulnerability while rendering and displaying a crafted SVG file.
Which versions of Qt are affected by CVE-2021-3481?
Versions 5.15.1, 6.0.0, 6.0.2, and 6.2.0 of Qt are affected by CVE-2021-3481.
How can I fix CVE-2021-3481?
To fix CVE-2021-3481, update to version 5.12.11 or later for Qt 5 or version 6.0.3 or later for Qt 6.
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