Resolves: CVE-2016-5421 - fix use of connection struct after free

0008-curl-7.47.1-CVE-2016-5421.patch

@@ -0,0 +1,34 @@
+From 93b8ffb630b62fedaef04a0d7674a89fe367bb22 Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Sun, 31 Jul 2016 01:09:04 +0200
+Subject: [PATCH] curl_multi_cleanup: clear connection pointer for easy handles
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+CVE-2016-5421
+Bug: https://curl.haxx.se/docs/adv_20160803C.html
+Reported-by: Marcelo Echeverria and Fernando Muñoz
+
+Upstream-commit: 75dc096e01ef1e21b6c57690d99371dedb2c0b80
+Signed-off-by: Kamil Dudka <kdudka@redhat.com>
+---
+ lib/multi.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/lib/multi.c b/lib/multi.c
+index 069412d..89ea625 100644
+--- a/lib/multi.c
++++ b/lib/multi.c
+@@ -1869,6 +1869,8 @@ static void close_all_connections(struct Curl_multi *multi)
+     conn->data = multi->closure_handle;
+ 
+     sigpipe_ignore(conn->data, &pipe_st);
++    conn->data->easy_conn = NULL; /* clear the easy handle's connection
++                                     pointer */
+     /* This will remove the connection from the cache */
+     (void)Curl_disconnect(conn, FALSE);
+     sigpipe_restore(&pipe_st);
+-- 
+2.5.5
+

curl.spec

@@ -1,7 +1,7 @@
 Summary: A utility for getting files from remote servers (FTP, HTTP, and others)
 Name: curl
 Version: 7.47.1
-Release: 5%{?dist}
+Release: 6%{?dist}
 License: MIT
 Group: Applications/Internet
 Source: http://curl.haxx.se/download/%{name}-%{version}.tar.lzma
@@ -13,6 +13,9 @@ Patch1: 0001-curl-7.47.1-psl-localhost.patch
 # fix SIGSEGV of the curl tool while parsing URL with too many globs (#1340757)
 Patch7:   0007-curl-7.49.1-urlglob.patch
 
+# fix use of connection struct after free (CVE-2016-5421)
+Patch8:   0008-curl-7.47.1-CVE-2016-5421.patch
+
 # patch making libcurl multilib ready
 Patch101: 0101-curl-7.32.0-multilib.patch
 
@@ -126,6 +129,7 @@ documentation of the library, too.
 # upstream patches
 %patch1 -p1
 %patch7 -p1
+%patch8 -p1
 
 # Fedora patches
 %patch101 -p1
@@ -238,7 +242,10 @@ rm -rf $RPM_BUILD_ROOT
 %{_datadir}/aclocal/libcurl.m4
 
 %changelog
-* Fri Jun 03 2016 Kamil Dudka <kdudka@redhat.com> 7.47.1-4
+* Wed Aug 03 2016 Kamil Dudka <kdudka@redhat.com> 7.47.1-6
+- fix use of connection struct after free (CVE-2016-5421)
+
+* Fri Jun 03 2016 Kamil Dudka <kdudka@redhat.com> 7.47.1-5
 - fix SIGSEGV of the curl tool while parsing URL with too many globs (#1340757)
 
 * Wed Mar 02 2016 Kamil Dudka <kdudka@redhat.com> 7.47.1-4