X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fwavpack.c;h=2bd77835b416ddd67202dd4f0199408bc1fc5758;hb=744801989099df26e90b00062c645969c5347533;hp=071e2be72c5dc4a63850b21c88056c1f01d6ac8a;hpb=8fad4b4e251bb21f8871fa829b593454528aff24;p=ffmpeg

diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c
index 071e2be72c5..2bd77835b41 100644
--- a/libavcodec/wavpack.c
+++ b/libavcodec/wavpack.c
@@ -1016,7 +1016,7 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
 
     if (wc->ch_offset + s->stereo >= avctx->channels) {
         av_log(avctx, AV_LOG_WARNING, "Too many channels coded in a packet.\n");
-        return (avctx->err_recognition & AV_EF_EXPLODE) ? AVERROR_INVALIDDATA : 0;
+        return ((avctx->err_recognition & AV_EF_EXPLODE) || !wc->ch_offset) ? AVERROR_INVALIDDATA : 0;
     }
 
     samples_l = frame->extended_data[wc->ch_offset];