idpf: fix kernel panic on unknown packet types

Linux kernel 安全漏洞

IDPF：修复对未知数据包类型的内核崩溃

In the Linux kernel, the following vulnerability has been resolved: idpf: fix kernel panic on unknown packet types In the very rare case where a packet type is unknown to the driver, idpf_rx_process_skb_fields would return early without calling eth_type_trans to set the skb protocol / the network layer handler. This is especially problematic if tcpdump is running when such a packet is received, i.e. it would cause a kernel panic. Instead, call eth_type_trans for every single packet, even when the packet type is unknown.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞。攻击者利用该漏洞导致内核恐慌。

在Linux内核中，已经解决了以下漏洞： idpf：修复未知数据包类型的内核崩溃 在非常罕见的情况下，如果某个数据包类型未知于驱动器，`idpf_rx_process_skb_fields`将提前返回，而不调用`eth_type_trans`以设置skb协议/网络层处理器。这尤其会引发问题，比如当接收到此类数据包时，tcpdump正在运行，即这会导致内核崩溃。 相反，对于每个单个数据包，即使数据包类型未知，也要调用`eth_type_trans`。