Debian Security Advisory

DLA-1786-1 qt4-x11 -- LTS security update

Date Reported:
14 May 2019
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2018-15518, CVE-2018-19869, CVE-2018-19870, CVE-2018-19871, CVE-2018-19873.
More information:

Multiple issues have been addressed in Qt4.

  • CVE-2018-15518

    A double-free or corruption during parsing of a specially crafted illegal XML document.

  • CVE-2018-19869

    A malformed SVG image could cause a segmentation fault in qsvghandler.cpp.

  • CVE-2018-19870

    A malformed GIF image might have caused a NULL pointer dereference in QGifHandler resulting in a segmentation fault.

  • CVE-2018-19871

    There was an uncontrolled resource consumption in QTgaFile.

  • CVE-2018-19873

    QBmpHandler had a buffer overflow via BMP data.

For Debian 8 Jessie, these problems have been fixed in version 4:4.8.6+git64-g5dc8b2b+dfsg-3+deb8u2.

We recommend that you upgrade your qt4-x11 packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: