Crafted (too small) data buffer could result in reading data outside of buffer.
Validate buffer size and return EINVAL if size is wrong.
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Acked-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>