diff --git a/pkgs/tools/networking/curl/default.nix b/pkgs/tools/networking/curl/default.nix
index 028b672380cf..88cdab38aafd 100644
--- a/pkgs/tools/networking/curl/default.nix
+++ b/pkgs/tools/networking/curl/default.nix
@@ -10,11 +10,11 @@ assert sslSupport -> openssl != null;
 assert scpSupport -> libssh2 != null;
 
 stdenv.mkDerivation rec {
-  name = "curl-7.28.0";
+  name = "curl-7.29.0";
 
   src = fetchurl {
     url = "http://curl.haxx.se/download/${name}.tar.bz2";
-    sha256 = "b7f510db60f520ba0bc8a39cccee7e913362205b4a7709e16af2cba14093099b";
+    sha256 = "0bw3sclhjqb2zwgcp6njjpaca62rwlj2mrw2r9wic47sqsxfhy4x";
   };
 
   # Zlib and OpenSSL must be propagated because `libcurl.la' contains
@@ -55,6 +55,8 @@ stdenv.mkDerivation rec {
     inherit sslSupport openssl;
   };
 
+  patches = [ ./fix-curl-multi-cleanup.patch ];
+
   preConfigure = ''
     sed -e 's|/usr/bin|/no-such-path|g' -i.bak configure
   '';
diff --git a/pkgs/tools/networking/curl/fix-curl-multi-cleanup.patch b/pkgs/tools/networking/curl/fix-curl-multi-cleanup.patch
new file mode 100644
index 000000000000..f6e42040cb8e
--- /dev/null
+++ b/pkgs/tools/networking/curl/fix-curl-multi-cleanup.patch
@@ -0,0 +1,32 @@
+commit 249c981407b8c52edf2b0833a78cd3d3d8bd2823
+Author: Shea Levy <shea@shealevy.com>
+Date:   Sun Feb 10 13:27:10 2013 -0500
+
+    curl_multi_cleanup: Don't try to cleanup the closure_handle if it is NULL.
+    
+    Without this, curl_multi_cleanup(curl_multi_init()) segfaults.
+    
+    Signed-off-by: Shea Levy <shea@shealevy.com>
+
+diff --git a/lib/multi.c b/lib/multi.c
+index fa0afb9..5b9d0bb 100644
+--- a/lib/multi.c
++++ b/lib/multi.c
+@@ -1773,11 +1773,13 @@ CURLMcode curl_multi_cleanup(CURLM *multi_handle)
+     /* Close all the connections in the connection cache */
+     close_all_connections(multi);
+ 
+-    multi->closure_handle->dns.hostcache = multi->hostcache;
+-    Curl_hostcache_clean(multi->closure_handle);
++    if (multi->closure_handle) {
++        multi->closure_handle->dns.hostcache = multi->hostcache;
++        Curl_hostcache_clean(multi->closure_handle);
+ 
+-    Curl_close(multi->closure_handle);
+-    multi->closure_handle = NULL;
++        Curl_close(multi->closure_handle);
++        multi->closure_handle = NULL;
++    }
+ 
+     Curl_hash_destroy(multi->sockhash);
+     multi->sockhash = NULL;