MEMORY_LEAK in phpdbg_prompt.c

[ellena13]

Description

Dynamic memory, referenced by res, is allocated at phpdbg_utils.c:154 :

php-src/sapi/phpdbg/phpdbg_utils.c

Lines 146 to 155 in cde956a

	PHPDBG_API char *phpdbg_resolve_path(const char *path) /* {{{ */
	{
	char resolved_name[MAXPATHLEN];
	if (expand_filepath(path, resolved_name) == NULL) {
	return NULL;
	}
	return strdup(resolved_name);
	} /* }}} */

by calling function phpdbg_resolve_path at phpdbg_prompt.c:405 and lost at phpdbg_prompt.c:411 :

php-src/sapi/phpdbg/phpdbg_prompt.c

Lines 405 to 412 in cde956a

	char *res = phpdbg_resolve_path(param->str);
	size_t res_len = strlen(res);
	if ((res_len != PHPDBG_G(exec_len)) || (memcmp(res, PHPDBG_G(exec), res_len) != SUCCESS)) {
	if (PHPDBG_G(in_execution)) {
	if (phpdbg_ask_user_permission("Do you really want to stop execution to set a new execution context?") == FAILURE) {
	return FAILURE;
	}

The allocated memory will be lost even if the condition at phpdbg_prompt.c:408 is false.

Found by Linux Verification Center (portal.linuxtesting.ru) with SVACE.

Author E. Bykhanova.

PHP Version

PHP 8.2.3

Operating System

ALT Linux

[nielsdos]

There's even a second one in the Execution context not changed path. I'll get to it.
Thanks for reporting!