Bug 1449558 (CVE-2014-9940)

Summary:	CVE-2014-9940 kernel: Use-after-free in the regulator_ena_gpio_free function
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	agordeev, aquini, bhu, dhoward, esammons, fhrbata, gansalmon, hwkernel-mgr, iboverma, ichavero, itamar, jforbes, jkacur, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, lwang, madhu.chinakonda, matt, mchehab, mcressma, mguzik, nmurray, pholasek, plougher, rt-maint, rvrbovsk, vdronov, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	The regulator_ena_gpio_free function in drivers/regulator/core.c in the Linux kernel allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted application.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-05-16 10:45:27 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:	1449559

Description Andrej Nemec 2017-05-10 09:16:56 UTC

The regulator_ena_gpio_free function in drivers/regulator/core.c in the Linux kernel allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted application.

References:

https://source.android.com/security/bulletin/2017-05-01#eop-in-kernel-voltage-regulator-driver

https://bugzilla.novell.com/show_bug.cgi?id=1037307

Upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=60a2362f769cf549dc466134efe71c8bf9fbaaba

Comment 3 Vladis Dronov 2017-05-16 10:45:27 UTC

Statement:

This issue does not affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2, as the code with the flaw is not present or is not built and so is not shipped in the products listed.