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ipv6: ip6_make_skb() needs to clear cork.base.dst

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[ Upstream commit 95ef498d97 ]

In my last patch, I missed fact that cork.base.dst was not initialized
in ip6_make_skb() :

If ip6_setup_cork() returns an error, we might attempt a dst_release()
on some random pointer.

Fixes: 862c03ee1d ("ipv6: fix possible mem leaks in ipv6_make_skb()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eric Dumazet
2018-01-11 22:31:18 -08:00
committed by Greg Kroah-Hartman
parent fb50d8c916
commit c2ceff11b4
1 changed files with 1 additions and 0 deletions
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1
net/ipv6/ip6_output.c
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@@ -1800,6 +1800,7 @@ struct sk_buff *ip6_make_skb(struct sock *sk,
cork.base.flags = 0;
cork.base.addr = 0;
cork.base.opt = NULL;
cork.base.dst = NULL;
v6_cork.opt = NULL;
err = ip6_setup_cork(sk, &cork, &v6_cork, ipc6, rt, fl6);
if (err) {