GNU parallel was updated to version 20150422 to fix one security issue, several bugs and add functionality.

The following vulnerability was fixed:

* A local attacker could make a user overwrite one of his own files with a single byte when using --compress, --tmux, --pipe, --cat or --fifo when guessing random file names within a time window of 15 ms. [boo#928664]

In addition, the update to 20150422 adds a number of bug fixes, improvements and new features.