[PATCH 03/10] cros_ec: Add run-time check for input buffer overflow

This should not happen in normal operation, but the EC might have a bug, so add a run-time check just in case.

Signed-off-by: Simon Glass sjg@chromium.org ---

drivers/misc/cros_ec.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/misc/cros_ec.c b/drivers/misc/cros_ec.c index ce5fa5bee35..e51ac874098 100644 --- a/drivers/misc/cros_ec.c +++ b/drivers/misc/cros_ec.c @@ -404,6 +404,8 @@ static int ec_command(struct udevice *dev, uint cmd, int cmd_version, */ if (din && in_buffer) { assert(len <= din_len); + if (len > din_len) + return -ENOSPC; memmove(din, in_buffer, len); } }