Bug 1490781 – CVE-2017-1000252 kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ

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Bug 1490781 - (CVE-2017-1000252) CVE-2017-1000252 kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ

Summary:	CVE-2017-1000252 kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ

Status:	MODIFIED

Aliases:	CVE-2017-1000252

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20170915,repor...
Keywords:	Security

Depends On:	1491652 1491653 1491654 1491655 1492168
Blocks:	1490783
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Reported:	2017-09-12 04:40 EDT by Adam Mariš
Modified:	2018-04-17 12:20 EDT (History)
CC List:	8 users (show)

See Also:
Fixed In Version:	kernel-3.10.0-720.el7
Doc Type:	Bug Fix
Doc Text:	A reachable assertion failure flaw was found in the Linux kernel built with KVM virtualisation(CONFIG_KVM) support with Virtual Function I/O feature (CONFIG_VFIO) enabled. This failure could occur if a malicious guest device sent a virtual interrupt (guest IRQ) with a larger (>1024) index value.
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Last Closed:
Type:	---
Regression:	---
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2018:0676	None	None	None	2018-04-10 04:06 EDT
Red Hat Product Errata	RHSA-2018:1062	None	None	None	2018-04-10 05:30 EDT
Red Hat Product Errata	RHSA-2018:1130	None	None	None	2018-04-17 12:20 EDT

Groups: None (edit)

Description Adam Mariš 2017-09-12 04:40:25 EDT

A reachable assertion failure flaw was found in the Linux kernel built with the
KVM virtualisation(CONFIG_KVM) support with Virtual Function I/O feature 
(CONFIG_VFIO) enabled. This could occur if a malicious guest device sent a
virtual interrupt(guest IRQ) with larger(>1024) index value.

A guest user/process could use this flaw to crash the KVM hypervisor resulting in Dos.

Note: It affects x86 arch platforms.

Upstream patches:
-----------------
  -> https://marc.info/?l=kvm&m=150549145711115&w=2
  -> https://marc.info/?l=kvm&m=150549146311117&w=2

Introduced by commit:
  -> https://git.kernel.org/linus/efc644048ecde54f016011fe10110addd0de348f

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2017/09/15/4

Comment 2 Adam Mariš 2017-09-13 03:03:22 EDT

Acknowledgments:

Name: Jan H. Schönherr (Amazon)

Comment 4 Prasad J Pandit 2017-09-14 07:06:51 EDT

Statement:

This issue does not affect the versions of the kernel package as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2.

This issue affects the version of Linux kernel as shipped with Red Hat Enterprise Linux 7. Future kernel updates for Red Hat Enterprise Linux 7 may address this issue.

Comment 7 Prasad J Pandit 2017-09-15 12:04:30 EDT

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1492168]

Comment 8 Rafael Aquini 2017-09-30 07:05:25 EDT

Patch(es) committed on kernel repository and an interim kernel build is undergoing testing

Comment 10 Rafael Aquini 2017-10-02 10:22:42 EDT

Patch(es) available on kernel-3.10.0-720.el7

Comment 11 Justin M. Forbes 2018-01-29 11:39:24 EST

This was fixed for Fedora with the 4.13.5 updates

Comment 13 errata-xmlrpc 2018-04-10 04:06:51 EDT

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 14 errata-xmlrpc 2018-04-10 05:30:28 EDT

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 15 errata-xmlrpc 2018-04-17 12:20:21 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.4 Extended Update Support

Via RHSA-2018:1130 https://access.redhat.com/errata/RHSA-2018:1130

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