From: Patrik Flykt <patrik.flykt@linux.intel.com>
Date: Fri, 31 Jan 2014 09:31:20 +0000 (+0200)
Subject: libsystemd-dhcp: DNS name option must be a multiple of 4 bytes
X-Git-Tag: v209~274
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=74e22380ed1d753130e9194186aefdf58449050e;p=elogind.git

libsystemd-dhcp: DNS name option must be a multiple of 4 bytes
---

diff --git a/src/libsystemd-dhcp/sd-dhcp-client.c b/src/libsystemd-dhcp/sd-dhcp-client.c
index 7e5c36a85..8115b7f76 100644
--- a/src/libsystemd-dhcp/sd-dhcp-client.c
+++ b/src/libsystemd-dhcp/sd-dhcp-client.c
@@ -760,7 +760,7 @@ static int client_parse_offer(uint8_t code, uint8_t len, const uint8_t *option,
                 break;
 
         case DHCP_OPTION_DOMAIN_NAME_SERVER:
-                if (len >= 4) {
+                if (len && !(len % 4)) {
                         unsigned i;
 
                         lease->dns_size = len / 4;