diff options
| author | Willem de Bruijn <willemb@google.com> | 2018-12-23 20:52:18 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-09 19:14:43 +0300 |
| commit | 59a3d2dc594ae27edbdb164b770ab287020dce93 (patch) | |
| tree | 7fd9610cdf8c99e467150c5aa69e4ce6941466a6 /net | |
| parent | 8d349348cb2eb2e913716b929c871932bd7ac38d (diff) | |
| download | linux-59a3d2dc594ae27edbdb164b770ab287020dce93.tar.xz | |
ieee802154: lowpan_header_create check must check daddr
[ Upstream commit 40c3ff6d5e0809505a067dd423c110c5658c478c ]
Packet sockets may call dev_header_parse with NULL daddr. Make
lowpan_header_ops.create fail.
Fixes: 87a93e4eceb4 ("ieee802154: change needed headroom/tailroom")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ieee802154/6lowpan/tx.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ieee802154/6lowpan/tx.c b/net/ieee802154/6lowpan/tx.c index ca53efa17be1..8bec827081cd 100644 --- a/net/ieee802154/6lowpan/tx.c +++ b/net/ieee802154/6lowpan/tx.c @@ -48,6 +48,9 @@ int lowpan_header_create(struct sk_buff *skb, struct net_device *ldev, const struct ipv6hdr *hdr = ipv6_hdr(skb); struct neighbour *n; + if (!daddr) + return -EINVAL; + /* TODO: * if this package isn't ipv6 one, where should it be routed? */ |