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
Summary: CVE-2018-8781 kernel: Integer overflow in drivers/gpu/drm/udl/udl_fb.c:udl_fb...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-8781
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1571063 1573097 1573098 1573099 1573100 1573101 1573102 1573103 1573104 1725177 1725178
Blocks: 1571065
TreeView+ depends on / blocked
 
Reported: 2018-04-24 03:43 UTC by Sam Fowler
Modified: 2022-03-13 14:54 UTC (History)
45 users (show)

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.
Clone Of:
Environment:
Last Closed: 2019-06-10 10:20:27 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:2948 0 None None None 2018-10-30 09:00:40 UTC
Red Hat Product Errata RHSA-2018:3083 0 None None None 2018-10-30 07:33:25 UTC
Red Hat Product Errata RHSA-2018:3096 0 None None None 2018-10-30 07:39:25 UTC

Description Sam Fowler 2018-04-24 03:43:30 UTC 
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 2018-04-24 03:44:34 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1571063]
Comment 2 Justin M. Forbes 2018-04-24 12:22:04 UTC 
This was fixed for Fedora with the 4.15.14 stable kernel updates.
Comment 8 errata-xmlrpc 2018-10-30 07:33:03 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 9 errata-xmlrpc 2018-10-30 07:39:04 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 10 errata-xmlrpc 2018-10-30 09:00:16 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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