Bug 1083270 (CVE-2013-7348)

Summary:	CVE-2013-7348 kernel: aio: double free in ioctx_alloc
Product:	[Other] Security Response	Reporter:	Petr Matousek <pmatouse>
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, matt, mchehab, mcressma, 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:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-04-01 19:22:25 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:	1083271
Bug Blocks:	1083273

Description Petr Matousek 2014-04-01 19:21:19 UTC

ioctx_alloc() calls aio_setup_ring() to allocate a ring. If aio_setup_ring() fails to do so it would call aio_free_ring() before returning, but ioctx_alloc() would call aio_free_ring() again causing a double free of the ring. 

Upstream fix:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d558023207e008a4476a3b7bb8706b2a2bf5d84f

References:
http://seclists.org/oss-sec/2014/q1/711

Comment 1 Petr Matousek 2014-04-01 19:22:25 UTC

Statement:

Not vulnerable.

This issued does not affect Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2.

Comment 2 Petr Matousek 2014-04-01 19:22:59 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1083271]