FreeBSD Security Advisory FreeBSD-SA-04:13.linux – A programming error in the handling of some Linux system calls may result in memory locations being accessed without proper validation under FreeBSD. All 4.x and 5.x releases are susceptible.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/33692/FreeBSD-SA-04%3A13.linux.txt
Source: https://packetstormsecurity.com/files/33692/FreeBSD-Security-Advisory-2004.13.html