Fixed in Firefox 59.0.2, Firefox ESR 52.7.3. CVE-2018-5148: Use-after-free in compositor Impact high A use-after-free vulnerability can occur in the compositor during certain graphics operations when a raw pointer is used instead of a reference counted one. This results in a potentially exploitable crash.
Since this was never stabilized, please stabilize www-client/firefox-52.8.0 to address this as well as newer security bugs.
x86 stable
amd64 stable