Bug 1520328 (CVE-2017-1000407)

Summary:	CVE-2017-1000407 Kernel: KVM: DoS via write flood to I/O port 0x80
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	airlied, ajax, aquini, bhu, blc, bskeggs, dhoward, dvlasenk, ewk, fhrbata, hdegoede, hkrzesin, hwkernel-mgr, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jkacur, john.j5live, jonathan, josef, jross, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, matt, mchehab, mcressma, mjg59, mlangsdo, mmilgram, nmurray, plougher, rvrbovsk, skozina, steved, vdronov, williams, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Linux kernel Virtualization Module (CONFIG_KVM) for the Intel processor family (CONFIG_KVM_INTEL) is vulnerable to a DoS issue. It could occur if a guest was to flood the I/O port 0x80 with write requests. A guest user could use this flaw to crash the host kernel resulting in DoS.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:32:35 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:	1520331, 1520347, 1520348, 1520349, 1695838
Bug Blocks:	1519133

Description Prasad Pandit 2017-12-04 09:29:20 UTC

Linux kernel built with the KVM virtualization(CONFIG_KVM) support
for the Intel processor family(CONFIG_KVM_INTEL), is vulnerable
to a DoS issue. It could occur if a guest was to flood the I/O
port 0x80 with write requests.

A guest user could use this flaw to crash the host kernel
resulting in DoS.

Upstream patch
--------------
  -> https://www.spinics.net/lists/kvm/msg159809.html

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2017/12/04/2

Comment 1 Prasad Pandit 2017-12-04 09:30:39 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1520331]

Comment 6 Justin M. Forbes 2018-01-29 17:34:52 UTC

This was fixed for Fedora with the 4.14.6 stable updates

Comment 7 errata-xmlrpc 2018-04-10 08:11:58 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:0676 https://access.redhat.com/errata/RHSA-2018:0676

Comment 8 errata-xmlrpc 2018-04-10 09:35:53 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:1062 https://access.redhat.com/errata/RHSA-2018:1062

Comment 10 errata-xmlrpc 2019-05-14 19:08:20 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.4 Extended Update Support

Via RHSA-2019:1170 https://access.redhat.com/errata/RHSA-2019:1170