The parse_report() function in whoopsie.c in Whoopsie through 0.2.69 mishandles memory allocation failures, which allows an attacker to cause a denial of service via a malformed crash file.
https://www.youtube.com/watch?v=oZXGwC7PWYE
https://usn.ubuntu.com/4450-1/
https://launchpad.net/ubuntu/+source/whoopsie
https://github.com/sungjungk/whoopsie_killer2/blob/master/whoopsie_killer2.py
https://github.com/sungjungk/whoopsie_killer2/blob/master/README.md