diff --git a/libavformat/mvdec.c b/libavformat/mvdec.c
index 69d9914fc1..713c666025 100644
--- a/libavformat/mvdec.c
+++ b/libavformat/mvdec.c
@@ -159,7 +159,10 @@ static int parse_audio_var(AVFormatContext *avctx, AVStream *st,
         st->codecpar->sample_rate = var_read_int(pb, size);
         avpriv_set_pts_info(st, 33, 1, st->codecpar->sample_rate);
     } else if (!strcmp(name, "SAMPLE_WIDTH")) {
-        st->codecpar->bits_per_coded_sample = var_read_int(pb, size) * 8;
+        uint64_t bpc = var_read_int(pb, size) * (uint64_t)8;
+        if (bpc > 16)
+            return AVERROR_INVALIDDATA;
+        st->codecpar->bits_per_coded_sample = bpc;
     } else
         return AVERROR_INVALIDDATA;