Bug 1198457 (CVE-2014-8173)

Summary:	CVE-2014-8173 kernel: NULL pointer dereference in madvise(MADV_WILLNEED) support
Product:	[Other] Security Response	Reporter:	Petr Matousek <pmatouse>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aquini, bhu, carnil, dhoward, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, lgoncalv, madhu.chinakonda, mchehab, mcressma, nmurray, rt-maint, rvrbovsk, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	A NULL pointer dereference flaw was found in the way the Linux kernel's madvise MADV_WILLNEED functionality handled page table locking. A local, unprivileged user could use this flaw to crash the system.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-20 10:50:43 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:	1072385, 1198460
Bug Blocks:	1198459

Description Petr Matousek 2015-03-04 08:29:30 UTC

A NULL pointer dereference flaw was found in the way Linux kernel's madvise
MADV_WILLNEED functionality handled page table locking. An unprivileged
local user could use this flaw to crash the system.

Upstream patch:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ee53664bda169f519ce3c6a22d378f0b946c8178

Comment 2 Petr Matousek 2015-03-04 08:33:40 UTC

Statement:

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and 6. This issue does affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG-2. Future updates for the respective releases may address this issue.

Comment 4 errata-xmlrpc 2015-03-05 13:05:29 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:0290 https://rhn.redhat.com/errata/RHSA-2015-0290.html

Comment 5 errata-xmlrpc 2015-03-17 14:41:36 UTC

This issue has been addressed in the following products:

  MRG for RHEL-6 v.2

Via RHSA-2015:0694 https://rhn.redhat.com/errata/RHSA-2015-0694.html