REDHAT-BUG-2492363: High severity The Linux Kernel Organization Linux kernel vulnerability

In the Linux kernel, the following vulnerability has been resolved:

ipv6: fix possible UAF in icmpv6rcv()

Caching saddr and daddr before pskbpull() is problematic since skb->head can change.

Remove these temporary variables:

- We only access &ipv6hdr(skb)->saddr and &ipv6hdr(skb)->daddr when netdbgratelimited() is called in the slow path.

- Avoid potential future misuse after pskbpull() call.