static int apparmor_setprocattr(struct task_struct *task, char *name,
				void *value, size_t size)
 {
 	struct common_audit_data sa;
 	struct apparmor_audit_data aad = {0,};
	char *command, *args = value;
 	size_t arg_size;
 	int error;
 
 	if (size == 0)
 		return -EINVAL;
	/* args points to a PAGE_SIZE buffer, AppArmor requires that
	 * the buffer must be null terminated or have size <= PAGE_SIZE -1
	 * so that AppArmor can null terminate them
	 */
	if (args[size - 1] != '\0') {
		if (size == PAGE_SIZE)
			return -EINVAL;
		args[size] = '\0';
	}
 	/* task can only write its own attributes */
 	if (current != task)
 		return -EACCES;
 
	args = value;
 	args = strim(args);
 	command = strsep(&args, " ");
 	if (!args)
		return -EINVAL;
 	args = skip_spaces(args);
 	if (!*args)
		return -EINVAL;
 
 	arg_size = size - (args - (char *) value);
 	if (strcmp(name, "current") == 0) {
		if (strcmp(command, "changehat") == 0) {
			error = aa_setprocattr_changehat(args, arg_size,
							 !AA_DO_TEST);
		} else if (strcmp(command, "permhat") == 0) {
			error = aa_setprocattr_changehat(args, arg_size,
							 AA_DO_TEST);
		} else if (strcmp(command, "changeprofile") == 0) {
			error = aa_setprocattr_changeprofile(args, !AA_ONEXEC,
							     !AA_DO_TEST);
		} else if (strcmp(command, "permprofile") == 0) {
			error = aa_setprocattr_changeprofile(args, !AA_ONEXEC,
							     AA_DO_TEST);
		} else
			goto fail;
	} else if (strcmp(name, "exec") == 0) {
		if (strcmp(command, "exec") == 0)
			error = aa_setprocattr_changeprofile(args, AA_ONEXEC,
							     !AA_DO_TEST);
		else
 			goto fail;
 	} else
 		/* only support the "current" and "exec" process attributes */
		return -EINVAL;
 
 	if (!error)
 		error = size;
 	return error;
 
 fail:
	sa.type = LSM_AUDIT_DATA_NONE;
	sa.aad = &aad;
 	aad.profile = aa_current_profile();
 	aad.op = OP_SETPROCATTR;
 	aad.info = name;
	aad.error = -EINVAL;
 	aa_audit_msg(AUDIT_APPARMOR_DENIED, &sa, NULL);
	return -EINVAL;
 }

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.