Debian Security Advisory 1777-1 – Peter Palfrader discovered that in the Git revision control system, on some architectures files under /usr/share/git-core/templates/ were owned by a non-root user. This allows a user with that uid on the local system to write to these files and possibly escalate their privileges.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/76859/dsa-1777-1.txt
Source: https://packetstormsecurity.com/files/76859/Debian-Linux-Security-Advisory-1777-1.html