From: David Miller <davem@davemloft.net>
To: eric.dumazet@gmail.com
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH net] ipv6: fix NULL dereference in ip6_route_dev_notify()
Date: Tue, 15 Aug 2017 17:06:54 -0700 (PDT) [thread overview]
Message-ID: <20170815.170654.981410365504343461.davem@davemloft.net> (raw)
In-Reply-To: <1502795391.4936.60.camel@edumazet-glaptop3.roam.corp.google.com>
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Tue, 15 Aug 2017 04:09:51 -0700
> From: Eric Dumazet <edumazet@google.com>
>
> Based on a syzkaller report [1], I found that a per cpu allocation
> failure in snmp6_alloc_dev() would then lead to NULL dereference in
> ip6_route_dev_notify().
>
> It seems this is a very old bug, thus no Fixes tag in this submission.
>
> Let's add in6_dev_put_clear() helper, as we will probably use
> it elsewhere (once available/present in net-next)
...
> Signed-off-by: Eric Dumazet <edumazet@google.com>
> Reported-by: Dmitry Vyukov <dvyukov@google.com>
Applied and queued up for -stable, thanks Eric.
next prev parent reply other threads:[~2017-08-16 0:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-15 11:09 [PATCH net] ipv6: fix NULL dereference in ip6_route_dev_notify() Eric Dumazet
2017-08-16 0:06 ` David Miller [this message]
2017-08-16 18:50 ` Cong Wang
2017-08-16 19:15 ` Eric Dumazet
2017-08-16 19:37 ` Eric Dumazet
2017-08-16 20:16 ` Cong Wang
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