DEBIAN-CVE-2020-6805

When removing data about an origin whose tab was recently closed, a use-after-free could occur in the Quota manager, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird 68.6, Firefox 74, Firefox ESR68.6, and Firefox ESR 68.6...

Mozilla: Use-after-free when removing data about origins

The Mozilla Foundation Security Advisory describes this flaw as: When removing data about an origin whose tab was recently closed, a use-after-free could occur in the Quota manager, resulting in a potentially exploitable crash...