Bug 1039951 (CVE-2013-7026)

Summary:	CVE-2013-7026 Kernel: ipc,shm: oops caused by shm_file deletion race condition
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	agordeev, anton, aquini, bhu, davej, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jkurik, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, mcressma, 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:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-06-17 09:28:22 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:	1043807
Bug Blocks:	1039882

Description Prasad Pandit 2013-12-10 12:14:11 UTC

Linux kernel built with the Sys V IPC support(CONFGI_SYSVIPC) is vulnerable to
a use-after-free flaw caused by a race condition during deletion of a shared
memory file object. It could occur while using shmctl(IPC_RMID) along with
other shm system calls.

A user/program could use this flaw to crash a system resulting in DoS.

Upstream fix:
-------------
 -> https://git.kernel.org/linus/a399b29dfbaaaf91162b2dc5a5875dd51bbfa2a1

Comment 1 Prasad Pandit 2013-12-17 09:11:20 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.