diff --git a/libavcodec/alac.c b/libavcodec/alac.c
index d643dd3eab67552a423278dabe31c763e3ba9bbe..41d1f772e8ada4acd62a19b72943b49693ae49d0 100644
--- a/libavcodec/alac.c
+++ b/libavcodec/alac.c
@@ -418,7 +418,8 @@ static int alac_decode_frame(AVCodecContext *avctx, void *data,
         }
 
         channels = (element == TYPE_CPE) ? 2 : 1;
-        if (ch + channels > alac->channels) {
+        if (ch + channels > alac->channels ||
+            ff_alac_channel_layout_offsets[alac->channels - 1][ch] + channels > alac->channels) {
             av_log(avctx, AV_LOG_ERROR, "invalid element channel count\n");
             return AVERROR_INVALIDDATA;
         }