From: Jouni Malinen <jouni@codeaurora.org>
Date: Tue, 5 Feb 2019 18:25:21 +0000 (+0200)
Subject: Clear config item writing buffer before freeing it
X-Git-Tag: hostap_2_8~424
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8f99a3c26ace5789e515944a09beb3081f7fbee2;p=thirdparty%2Fhostap.git

Clear config item writing buffer before freeing it

This buffer may be used to store items like passwords, so better clean
it explicitly to avoid possibility of leaving such items in heap memory
unnecessarily.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
---

diff --git a/wpa_supplicant/config_file.c b/wpa_supplicant/config_file.c
index 9b14699ae..f1d865ccb 100644
--- a/wpa_supplicant/config_file.c
+++ b/wpa_supplicant/config_file.c
@@ -493,7 +493,7 @@ static void write_str(FILE *f, const char *field, struct wpa_ssid *ssid)
 	if (value == NULL)
 		return;
 	fprintf(f, "\t%s=%s\n", field, value);
-	os_free(value);
+	str_clear_free(value);
 }