CVE-2020-6016
Valve’s Game Networking Sockets prior to version v1.2.0 improperly handles unreliable segments with negative offsets in function SNP_ReceiveUnreliableSegment(), leading to a Heap-Based Buffer Underflow and a free() of memory not from the heap, resulting in a memory corruption and probably even a remote code execution.
Date published : 2020-11-18
https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/