"Ubuntu whoopsie integer overflow vulnerability (CVE-2019-11484)" and the full "Chaining accidental features of Ubuntu’s crash reporter to get LPE"
https://securitylab.github.com/research/ubuntu-whoopsie-daisy-overview …

https://securitylab.github.com/research/ubuntu-whoopsie-CVE-2019-11484 … - thanks to @kevin_backhouse for the work and the super informative blog posts.