path: root/net/ieee802154/raw.c
diff options
authorPhoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>2014-03-17 18:30:19 +0100
committerDavid S. Miller <davem@davemloft.net>2014-03-18 15:59:25 -0400
commit8cfad496c4257441710735ccef622f3829870164 (patch)
treee5574aa1fac1cac858f94fffb571516bc35809dc /net/ieee802154/raw.c
parent3c5dfeff932224d3c97cee9fd0d1e2876d700ad3 (diff)
ieee802154: properly unshare skbs in ieee802154 *_rcv functions
ieee802154 sockets do not properly unshare received skbs, which leads to panics (at least) when they are used in conjunction with 6lowpan, so run skb_share_check on received skbs. 6lowpan also contains a use-after-free, which is trivially fixed by replacing the inlined skb_share_check with the explicit call. Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Tested-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ieee802154/raw.c')
1 files changed, 4 insertions, 0 deletions
diff --git a/net/ieee802154/raw.c b/net/ieee802154/raw.c
index e5258cf6773b..74d54fae33d7 100644
--- a/net/ieee802154/raw.c
+++ b/net/ieee802154/raw.c
@@ -213,6 +213,10 @@ out:
static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb)
+ skb = skb_share_check(skb, GFP_ATOMIC);
+ if (!skb)
+ return NET_RX_DROP;
if (sock_queue_rcv_skb(sk, skb) < 0) {
return NET_RX_DROP;

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