diff --git a/libavcodec/scpr.c b/libavcodec/scpr.c
index 694450abf0..f286ca8575 100644
--- a/libavcodec/scpr.c
+++ b/libavcodec/scpr.c
@@ -522,6 +522,9 @@ static int decompress_p(AVCodecContext *avctx,
         return ret;
 
     max += temp << 8;
+    if (min > max)
+        return AVERROR_INVALIDDATA;
+
     memset(s->blocks, 0, sizeof(*s->blocks) * s->nbcount);
 
     while (min <= max) {