Bug 1060023 (CVE-2014-0038)

Summary:	CVE-2014-0038 Kernel: 3.4+ arbitrary write with CONFIG_X86_X32
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	davej, gansalmon, itamar, jforbes, jonathan, jwboyer, kernel-maint, madhu.chinakonda, pmatouse, pneedle
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:	2014-01-31 09:58:26 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:
Bug Blocks:	1059980

Description Prasad Pandit 2014-01-31 09:35:03 UTC

Linux kernel(>= version 3.4+) built with the X32 ABI for 64-bit mode support
CONFIG_X86_X32, is vulnerable to an arbitrary write to a user supplied address.
X32 ABI allows 32-bit programs to run on 64-bit machines with all its features,
without using the 64-bit addressing. These programs continue to use 32-bit
memory addressing. The flaw occurs while doing a recvmmsg(2) call.

A user/program could use this flaw to crash the system resulting in DoS or
potentially escalate user privileges to a system.

Upstream fix:
-------------
 -> https://git.kernel.org/linus/2def2ef2ae5f3990aabdbe8a755911902707d268

Reference:
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 -> http://www.openwall.com/lists/oss-security/2014/01/31/2

Comment 1 Petr Matousek 2014-01-31 09:58:26 UTC

Statement:

Not vulnerable. 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.

Comment 3 Tomas Hoger 2014-02-17 10:01:30 UTC

HackerOne report:
https://hackerone.com/reports/960