kcm: fix a null pointer dereference in kcm_sendmsg()
authorWANG Cong <xiyou.wangcong@gmail.com>
Mon, 13 Feb 2017 19:13:16 +0000 (11:13 -0800)
committerDavid S. Miller <davem@davemloft.net>
Tue, 14 Feb 2017 18:06:37 +0000 (13:06 -0500)
commitcd27b96bc13841ee7af25837a6ae86fee87273d6
treeb0b7bbfad0aab8b7825f6bc259d7c1736e895e1f
parent01f8902bcf3ff124d0aeb88a774180ebcec20ace
kcm: fix a null pointer dereference in kcm_sendmsg()

In commit 98e3862ca2b1 ("kcm: fix 0-length case for kcm_sendmsg()")
I tried to avoid skb allocation for 0-length case, but missed
a check for NULL pointer in the non EOR case.

Fixes: 98e3862ca2b1 ("kcm: fix 0-length case for kcm_sendmsg()")
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Tom Herbert <tom@herbertland.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/kcm/kcmsock.c