diff -rup libavutil/hwcontext_vulkan.c.orig libavutil/hwcontext_vulkan.c
--- a/libavutil/hwcontext_vulkan.c
+++ b/libavutil/hwcontext_vulkan.c
@@ -862,7 +862,7 @@ static void free_exec_ctx(AVHWFramesCont
 
     av_freep(&cmd->queues);
     av_freep(&cmd->bufs);
-    cmd->pool = NULL;
+    cmd->pool = VK_NULL_HANDLE;
 }
 
 static VkCommandBuffer get_buf_exec_ctx(AVHWFramesContext *hwfc, VulkanExecCtx *cmd)