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Bug 1571062 - (CVE-2018-8781) CVE-2018-8781 kernel: Integer overflow in drivers/gpu/drm/udl/udl_fb.c:udl_fb_mmap() can allow attackers to execute code in kernel space
CVE-2018-8781 kernel: Integer overflow in drivers/gpu/drm/udl/udl_fb.c:udl_fb...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
impact=important,public=20180321,repo...
: Security
Depends On: 1573103 1573104 1571063 1573097 1573098 1573099 1573100 1573101 1573102
Blocks: 1571065
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Reported: 2018-04-23 23:43 EDT by Sam Fowler
Modified: 2018-10-30 05:00 EDT (History)
46 users (show)

See Also:
Fixed In Version: kernel 4.16
Doc Type: If docs needed, set a value
Doc Text:
A an integer overflow vulnerability was discovered in the Linux kernel, from version 3.4 through 4.15, in the drivers/gpu/drm/udl/udl_fb.c:udl_fb_mmap() function. An attacker with access to the udldrmfb driver could exploit this to obtain full read and write permissions on kernel physical pages, resulting in a code execution in kernel space.
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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 05:00 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 2018-04-23 23:43:30 EDT 
The Linux kernel from version 3.4 through 4.15 has an integer overflow vulnerability in the drivers/gpu/drm/udl/udl_fb.c:udl_fb_mmap() function. An attacker with access to the udldrmfb driver could exploit this to obtain full read and write permissions on kernel physical pages, resulting in a code execution in kernel space.


Upstream Patch:

https://patchwork.freedesktop.org/patch/211845/

Mitre annoucement:


https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-8781
Comment 1 Sam Fowler 2018-04-23 23:44:34 EDT 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1571063]
Comment 2 Justin M. Forbes 2018-04-24 08:22:04 EDT 
This was fixed for Fedora with the 4.15.14 stable kernel updates.
Comment 8 errata-xmlrpc 2018-10-30 03:33:03 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 9 errata-xmlrpc 2018-10-30 03:39:04 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 10 errata-xmlrpc 2018-10-30 05:00:16 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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