The Red Hat Linux su program does not log failed password guesses if the su process is killed before it times out, which allows local attackers to conduct brute force password guessing.
The Sun sdtcmconvert calendar utility for OpenWindows has a buffer overflow which can gain root access.
Buffer overflow in BNU UUCP daemon (uucpd) through long hostnames.
Buffer overflow in ufsrestore in Solaris 8 and earlier allows local users to gain root privileges via a long pathname.