CVE-2020-15889 – Lua 5.4.0 has a getobjname heap-based buffer over-read because youngcolle

Lua 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c uses markold for an insufficient number of list members.

Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15889

Reference (s):

• http://lua-users.org/lists/lua-l/2020-07/msg00078.html
• http://lua-users.org/lists/lua-l/2020-12/msg00157.html
• https://github.com/lua/lua/commit/127e7a6c8942b362aa3c6627f44d660a4fb75312