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-rw-r--r--PatchList.txt3
-rw-r--r--kernel.spec9
-rw-r--r--net-flow_dissector-fail-on-evil-iph-ihl.patch82
3 files changed, 94 insertions, 0 deletions
diff --git a/PatchList.txt b/PatchList.txt
index a96ac6ecc..dd261935e 100644
--- a/PatchList.txt
+++ b/PatchList.txt
@@ -1,5 +1,8 @@
**** Backports and patches headed/already upsteram *****************************
+* net-flow_dissector-fail-on-evil-iph-ihl.patch (rhbz 1007939 1025647)
+ - Should hit upstream and stable soon
+
* alps-Support-for-Dell-XT2-model.patch (rhbz 1023413)
- http://article.gmane.org/gmane.linux.kernel.input/32484
diff --git a/kernel.spec b/kernel.spec
index d7de7c982..8ce79f75d 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -736,6 +736,9 @@ Patch25132: rt2800usb-slow-down-TX-status-polling.patch
#rhbz 1023413
Patch25133: alps-Support-for-Dell-XT2-model.patch
+#CVE-2013-4348 rhbz 1007939 1025647
+Patch25139: net-flow_dissector-fail-on-evil-iph-ihl.patch
+
# END OF PATCH DEFINITIONS
%endif
@@ -1441,6 +1444,9 @@ ApplyPatch rt2800usb-slow-down-TX-status-polling.patch
#rhbz 1023413
ApplyPatch alps-Support-for-Dell-XT2-model.patch
+#CVE-2013-4348 rhbz 1007939 1025647
+ApplyPatch net-flow_dissector-fail-on-evil-iph-ihl.patch
+
# END OF PATCH APPLICATIONS
%endif
@@ -2244,6 +2250,9 @@ fi
# ||----w |
# || ||
%changelog
+* Fri Nov 01 2013 Josh Boyer <jwboyer@fedoraproject.org>
+- CVE-2013-4348 net: deadloop path in skb_flow_dissect (rhbz 1007939 1025647)
+
* Thu Oct 31 2013 Josh Boyer <jwboyer@fedoraproject.org> - 3.12.0-0.rc7.git2.1
- Linux v3.12-rc7-48-g12aee27
diff --git a/net-flow_dissector-fail-on-evil-iph-ihl.patch b/net-flow_dissector-fail-on-evil-iph-ihl.patch
new file mode 100644
index 000000000..aba3ea88b
--- /dev/null
+++ b/net-flow_dissector-fail-on-evil-iph-ihl.patch
@@ -0,0 +1,82 @@
+Path: news.gmane.org!not-for-mail
+From: Jason Wang <jasowang@redhat.com>
+Newsgroups: gmane.linux.kernel,gmane.linux.network
+Subject: [PATCH net] net: flow_dissector: fail on evil iph->ihl
+Date: Fri, 1 Nov 2013 15:01:10 +0800
+Lines: 34
+Approved: news@gmane.org
+Message-ID: <1383289270-18952-1-git-send-email-jasowang@redhat.com>
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+X-Complaints-To: usenet@ger.gmane.org
+NNTP-Posting-Date: Fri, 1 Nov 2013 07:01:36 +0000 (UTC)
+Cc: Jason Wang <jasowang@redhat.com>,
+ Petr Matousek <pmatouse@redhat.com>,
+ "Michael S. Tsirkin" <mst@redhat.com>,
+ Daniel Borkmann <dborkman@redhat.com>
+To: davem@davemloft.net, edumazet@google.com, netdev@vger.kernel.org,
+ linux-kernel@vger.kernel.org
+Original-X-From: linux-kernel-owner@vger.kernel.org Fri Nov 01 08:01:39 2013
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+Xref: news.gmane.org gmane.linux.kernel:1588387 gmane.linux.network:289242
+Archived-At: <http://permalink.gmane.org/gmane.linux.kernel/1588387>
+
+We don't validate iph->ihl which may lead a dead loop if we meet a IPIP
+skb whose iph->ihl is zero. Fix this by failing immediately when iph->ihl
+is evil (less than 5).
+
+This issue were introduced by commit ec5efe7946280d1e84603389a1030ccec0a767ae
+(rps: support IPIP encapsulation).
+
+Cc: Eric Dumazet <edumazet@google.com>
+Cc: Petr Matousek <pmatouse@redhat.com>
+Cc: Michael S. Tsirkin <mst@redhat.com>
+Cc: Daniel Borkmann <dborkman@redhat.com>
+Signed-off-by: Jason Wang <jasowang@redhat.com>
+---
+This patch is needed for stable.
+---
+ net/core/flow_dissector.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
+index 8d7d0dd..143b6fd 100644
+--- a/net/core/flow_dissector.c
++++ b/net/core/flow_dissector.c
+@@ -40,7 +40,7 @@ again:
+ struct iphdr _iph;
+ ip:
+ iph = skb_header_pointer(skb, nhoff, sizeof(_iph), &_iph);
+- if (!iph)
++ if (!iph || iph->ihl < 5)
+ return false;
+
+ if (ip_is_fragment(iph))
+--
+1.8.1.2
+