When `UpdateRegExpStatics` attempted to access `initialStringHeap` it could already have been garbage collected prior to entering the function, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.
No PoCs from references.
- https://github.com/5211-yx/javascript_fuzzer
- https://github.com/TimerIzaya/fuzzilli-plus
- https://github.com/TimerIzaya/izayailli
- https://github.com/googleprojectzero/fuzzilli
- https://github.com/zhangjiahui-buaa/MasterThesis