Bug 984664 - (CVE-2013-4125) CVE-2013-4125 kernel: ipv6: BUG_ON in fib6_add_rt2node()
CVE-2013-4125 kernel: ipv6: BUG_ON in fib6_add_rt2node()
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
high Severity high
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Assigned To: Red Hat Product Security
: Security
Depends On: 984667 984668
Blocks: 984673
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Reported: 2013-07-15 12:16 EDT by Petr Matousek
Modified: 2015-02-16 10:48 EST (History)
28 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2013-07-15 12:19:28 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Petr Matousek 2013-07-15 12:16:51 EDT
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:

Introduced by:

Introduced in upstream version:


Red Hat would like to thank Hannes Frederic Sowa for reporting this issue.
Comment 1 Petr Matousek 2013-07-15 12:19:28 EDT

Not vulnerable.

This issue did not affect the kernel packages as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2.
Comment 3 Petr Matousek 2013-07-15 12:26:04 EDT
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 984668]

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