tree feea70227c1ab66b2ceadcab8b24a544fc513da7
parent 4af4275418377156a41072806fe4fc2c57798e56
author Hannes Frederic Sowa <hannes@stressinduktion.org> 1376652607 +0200
committer chrmhoffmann <chrmhoffmann@gmail.com> 1586074727 +0200

ipv6: drop packets with multiple fragmentation headers

[ Upstream commit f46078cfcd77fa5165bf849f5e568a7ac5fa569c ]

It is not allowed for an ipv6 packet to contain multiple fragmentation
headers. So discard packets which were already reassembled by
fragmentation logic and send back a parameter problem icmp.

The updates for RFC 6980 will come in later, I have to do a bit more
research here.

Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>