diff --git a/drivers/media/video/v4l2-compat-ioctl32.c b/drivers/media/video/v4l2-compat-ioctl32.c
index dc7b8c23eac0662fe4498f3f622115d53c5e3533..f77f84bfe714be85b4c372cb010a1a37f4213de9 100644
--- a/drivers/media/video/v4l2-compat-ioctl32.c
+++ b/drivers/media/video/v4l2-compat-ioctl32.c
@@ -475,6 +475,9 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
 			return -EFAULT;
 	switch (kp->memory) {
 	case V4L2_MEMORY_MMAP:
+		if (get_user(kp->length, &up->length) ||
+			get_user(kp->m.offset, &up->m.offset))
+			return -EFAULT;
 		break;
 	case V4L2_MEMORY_USERPTR:
 		{