diff options
| author | Eric Dumazet <edumazet@google.com> | 2018-04-07 13:42:39 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-16 10:06:50 +0200 |
| commit | c5e0c93134455e9af7988dc1c75631ffe26da0d2 (patch) | |
| tree | af6fef65c9d72bed3eb7bf2418bcc6212b398767 | |
| parent | 1baf9dbebac9f1295794c76668b648e6e5f3efa7 (diff) | |
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 7d3442594e0d..5668dd3f9969 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -827,6 +827,7 @@ 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); |