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Bug 1573699 - (CVE-2018-1118) CVE-2018-1118 kernel: vhost: Information disclosure in vhost/vhost.c:vhost_new_msg()
CVE-2018-1118 kernel: vhost: Information disclosure in vhost/vhost.c:vhost_ne...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20180423,reported=2...
: Security
Depends On: 1573705 1573706 1573707 1576186 1576187 1576811
Blocks: 1572782
  Show dependency treegraph
 
Reported: 2018-05-02 01:00 EDT by Sam Fowler
Modified: 2018-10-30 05:01 EDT (History)
44 users (show)

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Doc Text:
The Linux kernel does not properly initialize memory in messages passed between virtual guests and the host operating system in the vhost/vhost.c:vhost_new_msg() function. This can allow local privileged users to read some kernel memory contents when reading from the /dev/vhost-net device file.
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RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:2948 None None None 2018-10-30 05:01 EDT
Red Hat Product Errata RHSA-2018:3083 None None None 2018-10-30 03:33 EDT
Red Hat Product Errata RHSA-2018:3096 None None None 2018-10-30 03:39 EDT

  None (edit)
Description Sam Fowler 2018-05-02 01:00:25 EDT
The Linux kernel does not properly initialize memory in messages passed between virtual guests and the host operating system in the vhost/vhost.c:vhost_new_msg() function. This can allow local privileged users to read some kernel memory contents when reading from  the /dev/vhost-net device file.

References:

https://lkml.org/lkml/2018/4/27/833

https://marc.info/?t=152484394400005&r=1&w=2 (and the next pages)
Comment 5 Wade Mealing 2018-05-09 01:20:36 EDT
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1576187]
Comment 9 Justin M. Forbes 2018-07-16 10:24:15 EDT
This was fixed for Fedora with the 4.17 rebases.
Comment 10 errata-xmlrpc 2018-10-30 03:33:09 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3083 https://access.redhat.com/errata/RHSA-2018:3083
Comment 11 errata-xmlrpc 2018-10-30 03:39:21 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3096 https://access.redhat.com/errata/RHSA-2018:3096
Comment 12 errata-xmlrpc 2018-10-30 05:00:47 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:2948 https://access.redhat.com/errata/RHSA-2018:2948

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