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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.

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释放并不在堆上的内存

ValveSoftware GameNetworkingSockets 缓冲区错误漏洞

Valvesoftware ValveSoftware GameNetworkingSockets是美国维尔福（Valvesoftware）公司的一个用于游戏传递数据的传输层支持软件。 Valves Game Networking Sockets 1.2.0之前版本存在安全漏洞，该漏洞源于SNP ReceiveUnreliableSegment()函数中用负偏移不当处理不可靠的段，导致基于堆的缓冲区下流和空闲()的内存不是来自堆，导致内存损坏，甚至可能导致远程代码执行。

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