Bug 1573699 (CVE-2018-1118) - CVE-2018-1118 kernel: vhost: Information disclosure in vhost/vhost.c:vhost_new_msg()
Summary: CVE-2018-1118 kernel: vhost: Information disclosure in vhost/vhost.c:vhost_ne...
Status: NEW
Alias: CVE-2018-1118
Product: Security Response
Classification: Other
Component: vulnerability   
(Show other bugs)
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=low,public=20180423,reported=2...
Keywords: Security
Depends On: 1573705 1573706 1573707 1576186 1576187 1576811
Blocks: 1572782
TreeView+ depends on / blocked
 
Reported: 2018-05-02 05:00 UTC by Sam Fowler
Modified: 2019-02-08 15:03 UTC (History)
43 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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.
Story Points: ---
Clone Of:
Environment:
Last Closed:
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:2948 None None None 2018-10-30 09:01 UTC
Red Hat Product Errata RHSA-2018:3083 None None None 2018-10-30 07:33 UTC
Red Hat Product Errata RHSA-2018:3096 None None None 2018-10-30 07:39 UTC

Description Sam Fowler 2018-05-02 05:00:25 UTC
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 05:20:36 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1576187]

Comment 9 Justin M. Forbes 2018-07-16 14:24:15 UTC
This was fixed for Fedora with the 4.17 rebases.

Comment 10 errata-xmlrpc 2018-10-30 07:33:09 UTC
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 07:39:21 UTC
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 09:00:47 UTC
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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