USN-979-1: okular vulnerability

Ubuntu Security Notice USN-979-1

26th August, 2010

kdegraphics vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 9.04


A heap-based buffer overflow in okular.

Software description

  • kdegraphics - graphics applications from the official KDE 4 release


Stefan Cornelius of Secunia Research discovered a boundary error during
RLE decompression in the "TranscribePalmImageToJPEG()" function in
generators/plucker/inplug/image.cpp of okular when processing images
embedded in PDB files, which can be exploited to cause a heap-based
buffer overflow. (CVE-2010-2575)

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 10.04 LTS:
okular 4:4.4.2-0ubuntu1.1
Ubuntu 9.10:
okular 4:4.3.2-0ubuntu1.1
Ubuntu 9.04:
okular 4:4.2.2-0ubuntu2.1

To update your system, please follow these instructions:

After a standard system update you need to restart any running instances
of okular to make all the necessary changes.