diff --git a/block.c b/block.c
index 3b7951eb4f..5a0b421655 100644
--- a/block.c
+++ b/block.c
@@ -2581,6 +2581,10 @@ static int bdrv_check_byte_request(BlockDriverState *bs, int64_t offset,
 {
     int64_t len;
 
+    if (size > INT_MAX) {
+        return -EIO;
+    }
+
     if (!bdrv_is_inserted(bs))
         return -ENOMEDIUM;