Bug 720552 (CVE-2011-2525)

Summary: CVE-2011-2525 kernel: kernel: net_sched: fix qdisc_notify()
Product: [Other] Security Response Reporter: Eugene Teo (Security Response) <eteo>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: anton, arozansk, bhu, davej, dhoward, fhrbata, jkacur, kernel-mgr, kmcmartin, lgoncalv, lwang, moshiro, plougher, rt-maint, sforsber, tcallawa, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-05-04 08:19:48 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 627850, 720555, 720556, 723094, 748670    
Bug Blocks: 720549    

Description Eugene Teo (Security Response) 2011-07-12 03:06:05 UTC
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) 2011-07-12 03:18:50 UTC
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 09:21:53 UTC
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 11:45:35 UTC
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 18:34:19 UTC
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) 2011-10-25 03:42:57 UTC
Created kernel tracking bugs for this issue

Affects: fedora-all [bug 748670]