tree 455655ae7ad1e53174166f45a484c2b3812786e8
parent 6a2febec338df7e7699a52d00b2e1207dcf65b28
author Dan Carpenter <dan.carpenter@oracle.com> 1593517575 +0300
committer David S. Miller <davem@davemloft.net> 1593567373 -0700

net: qrtr: Fix an out of bounds read qrtr_endpoint_post()

This code assumes that the user passed in enough data for a
qrtr_hdr_v1 or qrtr_hdr_v2 struct, but it's not necessarily true.  If
the buffer is too small then it will read beyond the end.

Reported-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reported-by: syzbot+b8fe393f999a291a9ea6@syzkaller.appspotmail.com
Fixes: 194ccc88297a ("net: qrtr: Support decoding incoming v2 packets")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>