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| author | Eric Dumazet <edumazet@google.com> | 2018-04-07 13:42:39 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-16 10:08:41 +0200 |
| commit | ec98618c20d0ba798798ec93fb366681f18347de (patch) | |
| tree | 4f35a24ff3a21915b7f17e13d907bc10822ce1d8 | |
| parent | a3cac7e26bbd944cc8bfc96c81d6784fbde594ec (diff) | |
| download | linux-stable-ec98618c20d0ba798798ec93fb366681f18347de.tar.gz linux-stable-ec98618c20d0ba798798ec93fb366681f18347de.tar.bz2 linux-stable-ec98618c20d0ba798798ec93fb366681f18347de.zip | |
net: initialize skb->peeked when cloning
commit b13dda9f9aa7caceeee61c080c2e544d5f5d85e5 upstream.
syzbot reported __skb_try_recv_from_queue() was using skb->peeked
while it was potentially unitialized.
We need to clear it in __skb_clone()
Fixes: 1da177e4c3f4 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/core/skbuff.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index fb422dfec848..a40ccc184b83 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -903,6 +903,7 @@ static struct sk_buff *__skb_clone(struct sk_buff *n, struct sk_buff *skb) n->hdr_len = skb->nohdr ? skb_headroom(skb) : skb->hdr_len; n->cloned = 1; n->nohdr = 0; + n->peeked = 0; n->destructor = NULL; C(tail); C(end); |