Debian Security Advisory

DLA-664-1 libxrender -- LTS security update

Date Reported:
18 Oct 2016
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 840443.
In Mitre's CVE dictionary: CVE-2016-7949, CVE-2016-7950.
More information:

Tobias Stoeckmann from the OpenBSD project has discovered a number of issues in the way various X client libraries handle the responses they receive from servers. Insufficient validation of data from the X server could cause out of boundary memory writes in the libXrender library potentially allowing the user to escalate their privileges.

For Debian 7 Wheezy, these problems have been fixed in version 1:0.9.7-1+deb7u3.

We recommend that you upgrade your libxrender packages.

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