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CVE-2014-2309 ipv6: crash due to router advertisment flooding (rhbz 1074471 1075064)

This commit is contained in:
Josh Boyer 2014-03-11 09:00:52 -04:00
parent 329a89d823
commit 1dd978d38f
2 changed files with 41 additions and 0 deletions
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32
ipv6-dont-set-DST_NOCOUNT-for-remotely-added-routes.patch Normal file
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@ -0,0 +1,32 @@
Bugzilla: 1074471
Upstream-status: queued for 3.14
From c88507fbad8055297c1d1e21e599f46960cbee39 Mon Sep 17 00:00:00 2001
From: Sabrina Dubroca <sd@queasysnail.net>
Date: Thu, 06 Mar 2014 16:51:57 +0000
Subject: ipv6: don't set DST_NOCOUNT for remotely added routes
DST_NOCOUNT should only be used if an authorized user adds routes
locally. In case of routes which are added on behalf of router
advertisments this flag must not get used as it allows an unlimited
number of routes getting added remotely.
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 11dac21..fba54a4 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1513,7 +1513,7 @@ int ip6_route_add(struct fib6_config *cfg)
if (!table)
goto out;
- rt = ip6_dst_alloc(net, NULL, DST_NOCOUNT, table);
+ rt = ip6_dst_alloc(net, NULL, (cfg->fc_flags & RTF_ADDRCONF) ? 0 : DST_NOCOUNT, table);
if (!rt) {
err = -ENOMEM;
--
cgit v0.9.2

9
kernel.spec
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@ -794,6 +794,9 @@ Patch25039: Revert-xhci-1.0-Limit-arbitrarily-aligned-scatter-gather.patch
#rhbz 1065663
Patch25040: iwlwifi-dvm-clear-IWL_STA_UCODE_INPROGRESS-when-asso.patch
#CVE-2014-2309 rhbz 1074471 1075064
Patch25041: ipv6-dont-set-DST_NOCOUNT-for-remotely-added-routes.patch
# END OF PATCH DEFINITIONS
%endif
@ -1544,6 +1547,9 @@ ApplyPatch Revert-xhci-1.0-Limit-arbitrarily-aligned-scatter-gather.patch
#rhbz 1065663
ApplyPatch iwlwifi-dvm-clear-IWL_STA_UCODE_INPROGRESS-when-asso.patch
#CVE-2014-2309 rhbz 1074471 1075064
ApplyPatch ipv6-dont-set-DST_NOCOUNT-for-remotely-added-routes.patch
# END OF PATCH APPLICATIONS
%endif
@ -2355,6 +2361,9 @@ fi
# ||----w |
# || ||
%changelog
* Tue Mar 11 2014 Josh Boyer <jwboyer@fedoraproject.org>
- CVE-2014-2309 ipv6: crash due to router advertisment flooding (rhbz 1074471 1075064)
* Fri Mar 07 2014 Justin M. Forbes <jforbes@fedoraproject.org> - 3.13.6-200
- Linux v3.13.6