diff --git a/libavutil/hwcontext_qsv.c b/libavutil/hwcontext_qsv.c
index 4ed4242ddf..b1759a93e1 100644
--- a/libavutil/hwcontext_qsv.c
+++ b/libavutil/hwcontext_qsv.c
@@ -2094,6 +2094,15 @@ static int qsv_device_derive(AVHWDeviceContext *ctx,
                              AVDictionary *opts, int flags)
 {
     mfxIMPL impl;
+    QSVDevicePriv *priv;
+
+    priv = av_mallocz(sizeof(*priv));
+    if (!priv)
+        return AVERROR(ENOMEM);
+
+    ctx->user_opaque = priv;
+    ctx->free = qsv_device_free;
+
     impl = choose_implementation("hw_any", child_device_ctx->type);
     return qsv_device_derive_from_child(ctx, impl,
                                         child_device_ctx, flags);