From: sadag <sadasg@gmail.com>
Date: Fri, 20 May 2016 11:26:27 +0000 (-0700)
Subject: sd-dhcp-client: fix busy loop reading zero sized DHCP UDP packets. (#3299)
X-Git-Tag: v230~19
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ad5ae47a0d159ea473c9730d7e0298a3e5d31cf6;p=thirdparty%2Fsystemd.git

sd-dhcp-client: fix busy loop reading zero sized DHCP UDP packets. (#3299)
---

diff --git a/src/libsystemd-network/sd-dhcp-client.c b/src/libsystemd-network/sd-dhcp-client.c
index 3846cf74760..123169832ce 100644
--- a/src/libsystemd-network/sd-dhcp-client.c
+++ b/src/libsystemd-network/sd-dhcp-client.c
@@ -1636,6 +1636,9 @@ static int client_receive_message_udp(
         if (buflen < 0)
                 return buflen;
 
+        if (buflen == 0)
+                buflen = 1;
+
         message = malloc0(buflen);
         if (!message)
                 return -ENOMEM;