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Bug 1520328 - (CVE-2017-1000407) CVE-2017-1000407 Kernel: KVM: DoS via write flood to I/O port 0x80
CVE-2017-1000407 Kernel: KVM: DoS via write flood to I/O port 0x80
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
: ---
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Assigned To: Red Hat Product Security
impact=moderate,public=20171201,repor...
: Security
Depends On: 1520347 1520331 1520348 1520349
Blocks: 1519133
  Show dependency tree / graph
 
Reported: 2017-12-04 04:29 EST by Prasad J Pandit
Modified: 2018-08-28 18:27 EDT (History)
44 users (show)

See Also:
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.
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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 04:12 EDT
Red Hat Product Errata RHSA-2018:1062 None None None 2018-04-10 05:36 EDT

  None (edit)
Description Prasad J Pandit 2017-12-04 04:29:20 EST 
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 J Pandit 2017-12-04 04:30:39 EST 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1520331]
Comment 4 Prasad J Pandit 2017-12-04 05:40:47 EST 
Statement:

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

This issue affects the version of Linux kernel as shipped with
Red Hat Enterprise Linux 6 and 7. Future kernel updates for Red Hat Enterprise Linux 6 and 7 may address this issue.
Comment 6 Justin M. Forbes 2018-01-29 12:34:52 EST 
This was fixed for Fedora with the 4.14.6 stable updates
Comment 7 errata-xmlrpc 2018-04-10 04:11:58 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 8 errata-xmlrpc 2018-04-10 05:35:53 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
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