diff --git a/libavcodec/cdxl.c b/libavcodec/cdxl.c
index c8d66b5845..7a9b41943d 100644
--- a/libavcodec/cdxl.c
+++ b/libavcodec/cdxl.c
@@ -275,7 +275,7 @@ static int cdxl_decode_frame(AVCodecContext *avctx, void *data,
     else
         aligned_width = FFALIGN(c->avctx->width, 16);
     c->padded_bits  = aligned_width - c->avctx->width;
-    if (c->video_size < aligned_width * avctx->height * c->bpp / 8)
+    if (c->video_size < aligned_width * avctx->height * (int64_t)c->bpp / 8)
         return AVERROR_INVALIDDATA;
     if (!encoding && c->palette_size && c->bpp <= 8) {
         avctx->pix_fmt = AV_PIX_FMT_PAL8;