Packet Parsing

Integer Overflow in Packet Reassembly: How One Missing Check Enables Heap Corruption

A critical heap buffer overflow vulnerability was discovered in the network packet reassembly function of `net_channel_ex.c`, where an attacker-controlled `bodylen` field could be used to corrupt heap memory without any bounds validation. The fix introduces a simple yet effective integer overflow check before accumulating packet body lengths, preventing malformed packets from triggering memory corruption. This type of vulnerability is a stark reminder that even low-level arithmetic operations in