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(parent: c56b194) | patch
netfilter: ipv6: fix use-after-free Write in nf_nat_ipv6_manip_pkt
authorFlorian Westphal <fw@strlen.de>
Mon, 19 Feb 2018 07:10:17 +0000 (08:10 +0100)
committerPablo Neira Ayuso <pablo@netfilter.org>
Sun, 25 Feb 2018 19:03:54 +0000 (20:03 +0100)
commit4f06c050457e6acdccfa0cd3a058a00d102eeef6
treeb0c147bff261292b2a83d5d608336e5cbccc38e1tree | snapshot
parentc56b194c0bc6a1f8608766f3d34271c711fcd6e3commit | diff
netfilter: ipv6: fix use-after-free Write in nf_nat_ipv6_manip_pkt

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: 162106cf9560eb ("netfilter: ipv6: add IPv6 NAT support")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
net/ipv6/netfilter/nf_nat_l3proto_ipv6.c diff | blob | history
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