| commit | bbd6528d28c1b8e80832b3b018ec402b6f5c3215 | [log] [tgz] |
|---|---|---|
| author | Eric Dumazet <edumazet@google.com> | Fri Sep 14 12:02:31 2018 -0700 |
| committer | David S. Miller <davem@davemloft.net> | Mon Sep 17 07:56:02 2018 -0700 |
| tree | 4c7e9f26af82fd34dcbc6520091f046982388a10 | |
| parent | a7f38002fb69b44f8fc622ecb838665d0b8666af [diff] |
ipv6: fix possible use-after-free in ip6_xmit()
In the unlikely case ip6_xmit() has to call skb_realloc_headroom(),
we need to call skb_set_owner_w() before consuming original skb,
otherwise we risk a use-after-free.
Bring IPv6 in line with what we do in IPv4 to fix this.
Fixes: 1da177e4c3f41 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>