Debian Security Advisory

DLA-2659-1 graphviz -- LTS security update

Date Reported:
13 May 2021
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 898841, Bug 988000.
In Mitre's CVE dictionary: CVE-2018-10196, CVE-2020-18032.
More information:

  • CVE-2018-10196

    NULL pointer dereference vulnerability in the rebuild_vlists function in lib/dotgen/conc.c in the dotgen library allows remote attackers to cause a denial of service (application crash) via a crafted file.

  • CVE-2020-18032

    A buffer overflow was discovered in Graphviz, which could potentially result in the execution of arbitrary code when processing a malformed file.

For Debian 9 stretch, these problems have been fixed in version 2.38.0-17+deb9u1.

We recommend that you upgrade your graphviz packages.

For the detailed security status of graphviz please refer to its security tracker page at:

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