Heap-based Buffer Over-read in Lua 5.4.0: Insufficient Marking in youngcollection

Heap-based Buffer Over-read in Lua 5.4.0: Insufficient Marking in youngcollection

CVE-2020-15889 · CRITICAL Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

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