diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c
index 8e026ba7c4..4351e3fedf 100644
--- a/libavcodec/wmaprodec.c
+++ b/libavcodec/wmaprodec.c
@@ -296,6 +296,12 @@ static av_cold int decode_init(AVCodecContext *avctx)
         s->decode_flags    = AV_RL16(edata_ptr+14);
         channel_mask       = AV_RL32(edata_ptr+2);
         s->bits_per_sample = AV_RL16(edata_ptr);
+
+        if (s->bits_per_sample > 32 || s->bits_per_sample < 1) {
+            avpriv_request_sample(avctx, "bits per sample is %d", s->bits_per_sample);
+            return AVERROR_PATCHWELCOME;
+        }
+
         /** dump the extradata */
         for (i = 0; i < avctx->extradata_size; i++)
             av_dlog(avctx, "[%x] ", avctx->extradata[i]);