Description
The GIF decoder in QtGui in Qt before 5.3 allows remote attackers to cause a denial of service (NULL pointer dereference) via invalid width and height values in a GIF image.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | qt4-x11 | 4:4.8.5+git192-g085f851+dfsg-2ubuntu4.1 | USN-2626-1 |
| Ubuntu 14.04 LTS | qtbase-opensource-src | 5.2.1+dfsg-1ubuntu14.3 | USN-2626-1 |
Advisories 1
- USN-2626-1 qt4-x11, qtbase-opensource-src vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
References
- https://bugs.kde.org/show_bug.cgi?id=333404
- openSUSE-SU-2015:0573 vendor-advisory
- FEDORA-2014-6922 vendor-advisory
- USN-2626-1 vendor-advisory
- [Announce] 20140424 Qt Security Advisory: DoS vulnerability in the GIF image handler mailing-list
- FEDORA-2014-6896 vendor-advisory
- FEDORA-2014-5695 vendor-advisory
- 67087 vdb-entry