static int exitcode_proc_show(struct seq_file *m, void *v)
{
	int val;

	/*
	 * Save uml_exitcode in a local so that we don't need to guarantee
	 * that sprintf accesses it atomically.
	 */
	val = uml_exitcode;
	seq_printf(m, "%d\n", val);
	return 0;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.