lgc.c in Lua 5.4.0 mishandles the interaction between barriers and the sweep phase, leading to a memory access violation involving collectgarbage.
Weakness
The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Lua | Lua | 5.4.0 (including) | 5.4.0 (including) |
| Lua5.1 | Ubuntu | trusty | * |
| Lua5.2 | Ubuntu | trusty | * |
| Lua5.3 | Ubuntu | trusty | * |
| Lua5.4 | Ubuntu | groovy | * |
| Lua5.4 | Ubuntu | trusty | * |
| Lua50 | Ubuntu | trusty | * |
Extended Description
This weakness can take several forms, such as:
Potential Mitigations
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, glibc in Linux provides protection against free of invalid pointers.