| commit | 4c21daae3dbc9f8536cc18e6e53627821fa2c90c | [log] [tgz] |
|---|---|---|
| author | YueHaibing <yuehaibing@huawei.com> | Thu May 28 22:34:07 2020 +0800 |
| committer | David S. Miller <davem@davemloft.net> | Mon Jun 01 15:33:24 2020 -0700 |
| tree | 6fe27ee7cb67f7f769a420f7aa329bd1dd24d004 | |
| parent | eae9d3c0167df840e821317040efcf0ca6789cb9 [diff] |
tipc: Fix NULL pointer dereference in __tipc_sendstream()
tipc_sendstream() may send zero length packet, then tipc_msg_append()
do not alloc skb, skb_peek_tail() will get NULL, msg_set_ack_required
will trigger NULL pointer dereference.
Reported-by: syzbot+8eac6d030e7807c21d32@syzkaller.appspotmail.com
Fixes: 0a3e060f340d ("tipc: add test for Nagle algorithm effectiveness")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>