When using the LD_PRELOAD environmental variable in SUID or SGID applications, glibc does not verify that preloaded libraries in /etc/ld.so.cache are also SUID/SGID, which could allow a local user to overwrite arbitrary files by loading a library from /lib or /usr/lib.

privatepw program in wu-ftpd before 2.6.1-6 allows local users to overwrite arbitrary files via a symlink attack.

sdiff 2.7 in the diffutils package allows local users to overwrite files via a symlink attack.

exmh 2.2 and earlier allows local users to overwrite arbitrary files via a symlink attack on the exmhErrorMsg temporary file.