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These changes are not necessary if dump directories are always root-owned and confined to direct subdirectories of /var/spool/abrt.

dd_opendir() should keep a file handle (opened with O_DIRECTORY) and use openat() and similar functions to access files in it.

dump_dir_accessible_by_uid() is fundamentally insecure because it opens up a classic time-of-check-time-of-use race between this function and and dd_opendir().  At least re-checking after dd_opendir() with the stored file descriptor is needed.

The file system manipulation functions should guard against hard links (check that link count is <= 1, just as in the user coredump code in abrt-hook-ccpp), possibly after opening the file with O_PATH first to avoid side effects on open/close.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2097.html