From: Jouni Malinen <jouni@codeaurora.org>
Date: Wed, 24 Jul 2019 16:34:11 +0000 (+0300)
Subject: EAP-AKA server: Avoid void pointer arithmetic
X-Git-Tag: hostap_2_9~58
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cfc9ebea03268e8ba8fc95b16e3e751295c5515e;p=thirdparty%2Fhostap.git

EAP-AKA server: Avoid void pointer arithmetic

This is a compiler specific extension and not compliant with the C
standard.

Fixes: 5eefa8115b88 ("EAP-AKA: Add Session-Id derivation during fast-reauth")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
---

diff --git a/src/eap_server/eap_server_aka.c b/src/eap_server/eap_server_aka.c
index 1f3884e36..e145a12a5 100644
--- a/src/eap_server/eap_server_aka.c
+++ b/src/eap_server/eap_server_aka.c
@@ -589,7 +589,7 @@ static struct wpabuf * eap_aka_build_reauth(struct eap_sm *sm,
 	 * Session-Id calculation after receiving response from the peer and
 	 * after all other checks pass. */
 	os_memcpy(data->reauth_mac,
-		  wpabuf_head(buf) + wpabuf_len(buf) - EAP_SIM_MAC_LEN,
+		  wpabuf_head_u8(buf) + wpabuf_len(buf) - EAP_SIM_MAC_LEN,
 		  EAP_SIM_MAC_LEN);
 
 	return buf;