From: Ben Hutchings <ben@decadent.org.uk>
Date: Thu, 28 Jan 2016 02:18:51 +0000 (+0000)
Subject: Fix alignment of hash buffer in dhcpv6_response_is_valid
X-Git-Tag: debian/1.1+git20160131-1~5^2
X-Git-Url: https://git.decadent.org.uk/gitweb/?p=odhcp6c.git;a=commitdiff_plain;h=ca0693fe09d59a95192c4ad86492f05dfadbbf10

Fix alignment of hash buffer in dhcpv6_response_is_valid

md5_final() writes to the hash buffer in 32-bit chunks, so it needs
to be 32-bit aligned.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

diff --git a/src/dhcpv6.c b/src/dhcpv6.c
index cbf6991..f91f2cf 100644
--- a/src/dhcpv6.c
+++ b/src/dhcpv6.c
@@ -702,7 +702,8 @@ static bool dhcpv6_response_is_valid(const void *buf, ssize_t len,
 				continue;
 
 			md5_ctx_t md5;
-			uint8_t serverhash[16], secretbytes[64], hash[16];
+			uint8_t serverhash[16], secretbytes[64];
+			uint32_t hash[4];
 			memcpy(serverhash, r->key, sizeof(serverhash));
 			memset(r->key, 0, sizeof(r->key));