Debian Security Advisory 1214-2 – Renaud Lifchitz discovered that gv, the PostScript and PDF viewer for X, performs insufficient boundary checks in the Postscript parsing code, which allows the execution of arbitrary code through a buffer overflow. The original update provided in DSA 1214-1 was insufficient; this update corrects this.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/53304/dsa-1214-2.txt
Source: https://packetstormsecurity.com/files/53304/Debian-Linux-Security-Advisory-1214-2.html