It was possible to mutate a JavaScript object so that the JIT could crash while tracing it. This vulnerability affects Firefox < 125.
{ "availability": "No subscription required", "binaries": [ { "binary_version": "125.0.2+build1-0ubuntu0.20.04.2", "binary_name": "firefox" }, { "binary_version": "125.0.2+build1-0ubuntu0.20.04.2", "binary_name": "firefox-dev" }, { "binary_version": "125.0.2+build1-0ubuntu0.20.04.2", "binary_name": "firefox-geckodriver" }, { "binary_version": "125.0.2+build1-0ubuntu0.20.04.2", "binary_name": "firefox-mozsymbols" } ] }