Bug 1109774 (CVE-2014-1739)

Summary:	CVE-2014-1739 Kernel: drivers: media: an information leakage
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	agordeev, aquini, bhu, carnil, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, matt, mchehab, mcressma, nobody, npajkovs, 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:	An information leak flaw was found in the way the Linux kernel handled media device enumerate entities IOCTL requests. A local user able to access the /dev/media0 device file could use this flaw to leak kernel memory bytes.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-08-21 23:52:46 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:	1109776, 1109777, 1109778
Bug Blocks:	1109686

Description Prasad Pandit 2014-06-16 10:45:12 UTC

Linux kernel built with the Multimedia support(CONFIG_MEDIA_SUPPORT) to enable
web-cam, video grabber devices, is vulnerable to an information leakage flaw.
It could occur while doing an ioctl(2) call on a media device file.

A user/process able to access the /dev/media0 device file could use this flaw
to leak kernel memory bytes.

Upstream fix:
-------------
  -> https://git.kernel.org/linus/e6a623460e5fc960ac3ee9f946d3106233fd28d8

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2014/06/15/1

Comment 1 Prasad Pandit 2014-06-16 10:49:10 UTC

Statement:

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

Comment 3 Prasad Pandit 2014-06-16 10:51:16 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1109778]

Comment 4 Martin Prpič 2014-12-05 14:33:45 UTC

IssueDescription:

An information leak flaw was found in the way the Linux kernel handled media device enumerate entities IOCTL requests. A local user able to access the /dev/media0 device file could use this flaw to leak kernel memory bytes.

Comment 5 errata-xmlrpc 2014-12-09 20:34:01 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2014:1971 https://rhn.redhat.com/errata/RHSA-2014-1971.html