ppc64-diag 2.6.1 allows local users to overwrite arbitrary files via a symlink attack related to (1) rtaserrd/diagsupport.c and /tmp/getdtfiles, (2) scripts/ppc64diagmkrsrc and /tmp/diagSEsnap/snapH.tar.gz, or (3) lpd/test/lpdelatest.sh and /var/tmp/ras.