Bug 1492640

Summary:	kernel: GPF in rt6_ifdown
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, airlied, ajax, aquini, bhu, blc, bskeggs, dhoward, eparis, esammons, esandeen, fhrbata, hdegoede, hkrzesin, hwkernel-mgr, iboverma, ichavero, itamar, jarodwilson, jforbes, jglisse, jkacur, jonathan, josef, jross, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, lwang, matt, mchehab, mcressma, mguzik, mjg59, mlangsdo, nhorman, nmurray, plougher, quintela, rt-maint, rvrbovsk, slawomir, steved, 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:	2017-10-06 09:03:11 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:	1491465, 1492641
Bug Blocks:	1492657

Description Adam Mariš 2017-09-18 11:38:21 UTC

GPF due to NULL pointer dereference in rt6_ifdown was reported allowing local attacker to cause system denia-of-service.

Bug report (reproducer included):

https://marc.info/?l=linux-kernel&m=149806759923073&w=2

Comment 1 Adam Mariš 2017-09-18 11:40:27 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1492641]

Comment 2 Vladis Dronov 2017-10-06 09:03:11 UTC

this is not a security flaw, so closing this bz as not-a-security-bug. fixing this as a regular bugfix is handled in bz1491465.

Comment 3 Justin M. Forbes 2018-01-29 16:46:40 UTC

This was fixed for Fedora with the 4.13 rebases.