chm2pdf 0.9 allows user-assisted local users to delete arbitrary files via a symlink attack on .chm files in the (1) /tmp/chm2pdf/work or (2) /tmp/chm2pdf/orig temporary directories.

chm2pdf 0.9 uses temporary files in directories with fixed names, which allows local users to cause a denial of service (chm2pdf failure) of other users by creating those directories ahead of time.