Bug 829446 - (CVE-2013-4125) VUL-0: kernel: CVE-2013-4125: kernel panic possible on same layer-2 network with IPv6 RA
(CVE-2013-4125)
VUL-0: kernel: CVE-2013-4125: kernel panic possible on same layer-2 network w...
Status: RESOLVED FIXED
Classification: Novell Products
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents
unspecified
Other Other
: P3 - Medium : Major
: ---
Assigned To: Security Team bot
Security Team bot
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2013-07-15 06:17 UTC by Sebastian Krahmer
Modified: 2013-10-04 16:45 UTC (History)
2 users (show)

See Also:
Found By: ---
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---


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Comment 2 Swamp Workflow Management 2013-07-15 22:00:21 UTC
bugbot adjusting priority
Comment 3 Sebastian Krahmer 2013-07-16 05:57:26 UTC
public via oss-sec:

Date: Mon, 15 Jul 2013 18:24:17 +0200
From: Petr Matousek
To: oss-security


If two router advertisment speaker announce seperate default gateways
with infinite timeout the kernel currently packs these routes together
into an ecmp route set. If one of the RA speaker now changes the
advertised expiration to a lower value and a third route with infinite
timeout pops up we end up with a BUG_ON.

Remote attacker could use this flaw to crash the system.

Fixed by:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=307f2fb95e9b96b3577916e73d92e104f8f26494

Introduced by:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=51ebd3181572af8d5076808dab2682d800f6da5d

Introduced in upstream version:
v3.7-rc1

Acknowledgements:

Red Hat would like to thank Hannes Frederic Sowa for reporting this
issue.

--
Petr Matousek / Red Hat Security Response Team
Comment 4 Sebastian Krahmer 2013-07-16 05:58:05 UTC
CVE-2013-4125
Comment 5 Marcus Meissner 2013-07-17 13:27:02 UTC
perl bin/addnote CVE-2013-4125 "The issue was introduced in Linux kernel 3.7 development, so it does not affect SUSE Linux Enterprise 11 or older products. It only affects openSUSE 12.3 which will receive fixes."
Comment 6 Jiri Bohac 2013-09-19 15:38:13 UTC
The (In reply to comment #3)
> Fixed by:
> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=307f2fb95e9b96b3577916e73d92e104f8f26494
> 
> Introduced by:
> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=51ebd3181572af8d5076808dab2682d800f6da5d
> 
> Introduced in upstream version:
> v3.7-rc1

no, 51ebd3181572af8d5076808dab2682d800f6da5d has actually been introduced in v3.8-rc1, so no SUSE products are affected, not even openSUSE 12.3
Comment 7 Marcus Meissner 2013-10-04 16:45:01 UTC
so nothing todo