diff --git a/libavfilter/vf_dnn_processing.c b/libavfilter/vf_dnn_processing.c
index e05d59a649..e1d9d24683 100644
--- a/libavfilter/vf_dnn_processing.c
+++ b/libavfilter/vf_dnn_processing.c
@@ -225,6 +225,9 @@ static int copy_uv_planes(DnnProcessingContext *ctx, AVFrame *out, const AVFrame
         uv_height = AV_CEIL_RSHIFT(in->height, desc->log2_chroma_h);
         for (int i = 1; i < 3; ++i) {
             int bytewidth = av_image_get_linesize(in->format, in->width, i);
+            if (bytewidth < 0) {
+                return AVERROR(EINVAL);
+            }
             av_image_copy_plane(out->data[i], out->linesize[i],
                                 in->data[i], in->linesize[i],
                                 bytewidth, uv_height);