Bug 720552 - (CVE-2011-2525) CVE-2011-2525 kernel: kernel: net_sched: fix qdisc_notify()
CVE-2011-2525 kernel: kernel: net_sched: fix qdisc_notify()
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
public=20100521,reported=20110712,sou...
: Security
Depends On: 627850 720555 720556 723094 748670
Blocks: 720549
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Reported: 2011-07-11 23:06 EDT by Eugene Teo (Security Response)
Modified: 2016-11-08 10:58 EST (History)
17 users (show)

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Doc Type: Bug Fix
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Last Closed: 2012-05-04 04:19:48 EDT
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Description Eugene Teo (Security Response) 2011-07-11 23:06:05 EDT
tc_fill_qdisc() should not be called for builtin qdisc, or it dereference a NULL pointer to get device ifindex.

Reference:
http://kerneltrap.org/mailarchive/linux-netdev/2010/5/21/6277805

Upstream commit:
http://git.kernel.org/linus/53b0f08042f04813cd1a7473dacd3edfacb28eb3
Comment 3 Eugene Teo (Security Response) 2011-07-11 23:18:50 EDT
Statement:

This flaw affects Red Hat Enterprise Linux 4 and 5. It did not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG as they have already backported the upstream commit 53b0f080 that addressed this flaw. This has been addressed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2011-1065.html. Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore the fix for this issue is not currently planned to be included in the future updates.
Comment 5 errata-xmlrpc 2011-07-21 05:21:53 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2011:1065 https://rhn.redhat.com/errata/RHSA-2011-1065.html
Comment 6 errata-xmlrpc 2011-07-21 07:45:35 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2011:1065 https://rhn.redhat.com/errata/RHSA-2011-1065.html
Comment 7 errata-xmlrpc 2011-08-16 14:34:19 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5.6.Z - Server Only

Via RHSA-2011:1163 https://rhn.redhat.com/errata/RHSA-2011-1163.html
Comment 8 Eugene Teo (Security Response) 2011-10-24 23:42:57 EDT
Created kernel tracking bugs for this issue

Affects: fedora-all [bug 748670]

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