git.stricted.de - GitHub/moto-9609/android_kernel_motorola

author	Florian Westphal <fw@strlen.de>
	Mon, 19 Feb 2018 07:10:17 +0000 (08:10 +0100)
committer	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
	Thu, 15 Mar 2018 09:54:24 +0000 (10:54 +0100)
commit	39f154faecc23e42190a41e6225060c39092d1f8
tree	2e289907feb6132fcebc41bbe53f4b15331218e5	tree \| snapshot (tar.gz zip)
parent	2d7e07003950dadd2f918effff584b0c98501189	commit \| diff

netfilter: ipv6: fix use-after-free Write in nf_nat_ipv6_manip_pkt

commit b078556aecd791b0e5cb3a59f4c3a14273b52121 upstream.

l4proto->manip_pkt() can cause reallocation of skb head so pointer
to the ipv6 header must be reloaded.

Reported-and-tested-by: <syzbot+10005f4292fc9cc89de7@syzkaller.appspotmail.com>
Fixes: 58a317f1061c89 ("netfilter: ipv6: add IPv6 NAT support")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>