Bug 751297 – CVE-2011-4110 kernel: keys: NULL pointer deref in the user-defined key type

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Bug 751297 - (CVE-2011-4110) CVE-2011-4110 kernel: keys: NULL pointer deref in the user-defined key type

Summary:	CVE-2011-4110 kernel: keys: NULL pointer deref in the user-defined key type

Status:	CLOSED ERRATA

Aliases:	CVE-2011-4110

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20111115,repor...
Keywords:	Security

Depends On:	751190 751300 751301 751302 752529 756160 756168 756169 761377
Blocks:	751306
	Show dependency tree / graph

Reported:	2011-11-04 05:10 EDT by Petr Matousek
Modified:	2016-03-04 07:34 EST (History)
CC List:	17 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2012-05-10 05:10:08 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
CVE-2011-4110 proposed patch (3.17 KB, patch) 2011-11-04 05:13 EDT, Petr Matousek	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2011:1479	normal	SHIPPED_LIVE	Important: kernel security, bug fix, and enhancement update	2011-11-29 14:25:05 EST
Red Hat Product Errata	RHSA-2011:1530	normal	SHIPPED_LIVE	Moderate: Red Hat Enterprise Linux 6 kernel security, bug fix and enhancement update	2011-12-05 20:45:35 EST
Red Hat Product Errata	RHSA-2012:0010	normal	SHIPPED_LIVE	Important: kernel-rt security and bug fix update	2012-01-10 20:14:23 EST
Red Hat Product Errata	RHSA-2012:0116	normal	SHIPPED_LIVE	Moderate: kernel security and bug fix update	2012-02-15 00:42:54 EST
Red Hat Product Errata	RHSA-2012:0333	normal	SHIPPED_LIVE	Important: kernel-rt security and bug fix update	2012-02-23 20:21:35 EST

Groups: None (edit)

Description Petr Matousek 2011-11-04 05:10:39 EDT

A flaw was found in the way Linux kernel handled user-defined key types. An unprivileged local user could use this flaw to crash the system.

Reference:
https://lkml.org/lkml/2011/11/15/363

Comment 1 Petr Matousek 2011-11-04 05:13:44 EDT

Created attachment 531725 [details]
CVE-2011-4110 proposed patch

Comment 5 Petr Matousek 2011-11-04 10:32:47 EDT

Statement:

This issue affects the Linux kernel as shipped with Red Hat Enterprise Linux 4,
5, 6, and Red Hat Enterprise MRG. This has been addressed in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-1479.html, https://rhn.redhat.com/errata/RHSA-2011-1530.html, and https://rhn.redhat.com/errata/RHSA-2012-0010.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 10 Petr Matousek 2011-11-16 03:30:45 EST

Upstream commit:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9f35a33b8d06263a165efe3541d9aa0cdbd70b3b

Comment 13 Petr Matousek 2011-11-22 15:49:10 EST

Created kernel tracking bugs for this issue

Affects: fedora-all [bug 756160]

Comment 15 errata-xmlrpc 2011-11-29 09:37:54 EST

This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2011:1479 https://rhn.redhat.com/errata/RHSA-2011-1479.html

Comment 16 errata-xmlrpc 2011-12-06 09:27:22 EST

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:1530 https://rhn.redhat.com/errata/RHSA-2011-1530.html

Comment 18 errata-xmlrpc 2012-01-10 15:16:52 EST

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2012:0010 https://rhn.redhat.com/errata/RHSA-2012-0010.html

Comment 19 errata-xmlrpc 2012-02-14 19:44:10 EST

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.1 EUS - Server Only

Via RHSA-2012:0116 https://rhn.redhat.com/errata/RHSA-2012-0116.html

Comment 20 errata-xmlrpc 2012-02-23 15:23:17 EST

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2012:0333 https://rhn.redhat.com/errata/RHSA-2012-0333.html

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