Bug 1147522 (CVE-2014-7145)

Summary:	CVE-2014-7145 Kernel: cifs: NULL pointer dereference in SMB2_tcon
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	agordeev, aquini, bhu, chazlett, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jonathan, jross, jrusnack, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, matt, mchehab, mcressma, nmurray, pholasek, plougher, 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 Common Internet File System (CIFS) implementation handled mounting of file system shares. A remote attacker could use this flaw to crash a client system that would mount a file system share from a malicious server.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-01-28 20:12:59 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:	1147528, 1147529, 1147531
Bug Blocks:	1143890

Description Prasad Pandit 2014-09-29 13:07:03 UTC

Linux kernel built with the Network Filesystem CIFS support(CONFIG_CIFS) along
with the support for SMB2 and SMB3 network file systems(CONFIG_CIFS_SMB2) is
vulnerable to a NULL pointer dereference flaw. It could occur while mounting
the remote file system share.

A remote attacker could use this flaw to crash the client systems resulting in DoS.

Upstream fix:
-------------
  -> https://git.kernel.org/linus/18f39e7be0121317550d03e267e3ebd4dbfbb3ce

Comment 1 Prasad Pandit 2014-09-29 13:13:45 UTC

Statement:

This issue does not affect the versions of the kernel package as shipped with
Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG 2.

This issue affects the version of Linux kernel as shipped with Red Hat Enterprise Linux 7. Future kernel updates for Red Hat Enterprise Linux 7 may address this issue.

Comment 3 Prasad Pandit 2014-09-29 13:17:08 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1147531]

Comment 4 errata-xmlrpc 2015-01-28 19:07:06 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:0102 https://rhn.redhat.com/errata/RHSA-2015-0102.html