From: Eric Dumazet edumazet@google.com
This patch has been added to the 4.1 stable tree. If you have any objections, please let us know.
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[ Upstream commit 95ef498d977bf44ac094778fd448b98af158a3e6 ]
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: 862c03ee1deb ("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: Sasha Levin alexander.levin@microsoft.com --- net/ipv6/ip6_output.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 2bfdfd8218a0..97397a3df219 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -1759,6 +1759,7 @@ 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, hlimit, tclass, opt, rt, fl6); if (err) {