Steve Kemp discovered several buffer overflows in xgalaga, a game, which can be triggered by a long HOME environment variable. This vulnerability could be exploited by a local attacker to gain gid 'games'.
For the stable distribution (woody) this problem has been fixed in version 2.0.34-19woody1.
For the unstable distribution (sid) this problem is fixed in version 2.0.34-22.
We recommend that you update your xgalaga package.
MD5 checksums of the listed files are available in the original advisory.