Bug 1629030 (CVE-2018-9415)

Summary:	CVE-2018-9415 kernel: race condition in the ARM Advanced Microcontroller Bus Architecture (AMBA) driver
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abhgupta, airlied, aquini, bhu, blc, bskeggs, dbaker, dhoward, ewk, fhrbata, hdegoede, hkrzesin, hwkernel-mgr, iboverma, ichavero, itamar, jarodwilson, jforbes, jkacur, john.j5live, jokerman, jonathan, josef, jross, jstancek, jwboyer, kernel-maint, kernel-mgr, lgoncalv, linville, mchehab, mcressma, mjg59, mlangsdo, nmurray, pmatouse, rt-maint, rvrbovsk, rvr, skozina, steved, sthangav, trankin, 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:	A flaw was found in the Linux kernel. A race condition existed in the ARM Advanced Microcontroller Bus Architecture (AMBA) driver that could result in a double free. A local attacker could use this to cause a denial of service. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-25 22:16:27 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:	1629033, 1629034, 1631259, 1631261, 1638272
Bug Blocks:	1629032

Description Laura Pardo 2018-09-14 17:05:15 UTC

A flaw was found in the Linux kernel. A race condition existed in the ARM Advanced Microcontroller Bus Architecture (AMBA) driver that could result in a double free. A local attacker could use this to cause a denial of service. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.

References:

https://lore.kernel.org/patchwork/patch/876236/

https://source.android.com/security/bulletin/pixel/2018-07-01

Introduced by: 

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3cf385713460eb2bb4cb7ceb8ed89833b00b594b 

Fixed by: 

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6a7228d90d42bcacfe38786756ba62762b91c20a

Comment 1 Laura Pardo 2018-09-14 17:08:40 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1629034]

Comment 3 Justin M. Forbes 2018-09-17 12:40:50 UTC

This was fixed for Fedora with the 4.16.7 stable updates.