Bug 1451393 (CVE-2017-8925)

Summary:	CVE-2017-8925 kernel: Reference count mishandling in the omninet_open function
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	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:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-05-16 14:46:36 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1457213
Bug Blocks:

Description Andrej Nemec 2017-05-16 14:42:21 UTC

The omninet_open function in drivers/usb/serial/omninet.c in the Linux kernel allows local users to cause a denial of service (tty exhaustion) by leveraging reference count mishandling.

Upstream patch:

https://github.com/torvalds/linux/commit/30572418b445d85fcfe6c8fe84c947d2606767d8

Comment 1 Andrej Nemec 2017-05-16 14:46:36 UTC

Statement:

Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

Comment 2 Vladis Dronov 2017-05-31 11:06:14 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1457213]

Comment 6 Justin M. Forbes 2017-05-31 12:06:39 UTC

This was fixed for Fedora with the 4.10.4 stable update which first shipped to Fedora releases in March.