LuaJIT through 2.1 has a stack-buffer-overflow in lj_strfmt_wfnum in lj_strfmt_num.c.
https://github.com/LuaJIT/LuaJIT/issues/1149
https://github.com/LuaJIT/LuaJIT/commit/343ce0edaf3906a62022936175b2f5410024cbfc
https://gist.github.com/pwnhacker0x18/cd75d01fc7c9b6c85c183fbe5353d276