singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.
| Software | From | Fixed in |
|---|---|---|
| fedoraproject / fedora | 35 | 35.x |
| fedoraproject / fedora | 36 | 36.x |
| lua / lua | 5.4.0 | 5.4.5 |