Bug 1445331 (CVE-2017-8071)

Summary:	CVE-2017-8071 kernel: hid-cp2112.c uses a spinlock without considering that sleeping is possible in a USB HID request callback
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
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, 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, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2017-04-25 13:59:17 UTC	Type:	---
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Adam Mariš 2017-04-25 13:45:48 UTC

drivers/hid/hid-cp2112.c in the Linux kernel 4.9.x before 4.9.9 uses a
spinlock without considering that sleeping is possible in a USB HID
request callback, which allows local users to cause a denial of
service (deadlock) via unspecified vectors.

Upstream patch:

https://github.com/torvalds/linux/commit/7a7b5df84b6b4e5d599c7289526eed96541a0654