Kernel: Don't crash the kernel if packet is smaller than ethernet hdr

2024-09-19 22:51:55 +03:00 · 2024-09-19 22:51:55 +03:00 · 7f0c39fe91
parent a489be0e05
commit 7f0c39fe91
1 changed files with 2 additions and 0 deletions
--- a/kernel/kernel/Networking/NetworkManager.cpp
+++ b/kernel/kernel/Networking/NetworkManager.cpp
@ -121,6 +121,8 @@ namespace Kernel

 	void NetworkManager::on_receive(NetworkInterface& interface, BAN::ConstByteSpan packet)
 	{
+		if (packet.size() < sizeof(EthernetHeader))
+			return;
 		auto ethernet_header = packet.as<const EthernetHeader>();

 		switch (ethernet_header.ether_type)