CVE-2018-8781
Published: 23 April 2018
The udl_fb_mmap function in drivers/gpu/drm/udl/udl_fb.c at the Linux kernel version 3.4 and up to and including 4.15 has an integer-overflow vulnerability allowing local users with access to the udldrmfb driver to obtain full read and write permissions on kernel physical pages, resulting in a code execution in kernel space.
From the Ubuntu Security Team
Eyal Itkin discovered that the USB displaylink video adapter driver in the Linux kernel did not properly validate mmap offsets sent from userspace. A local attacker could use this to expose sensitive information (kernel memory) or possibly execute arbitrary code.
Priority
Status
Package | Release | Status |
---|---|---|
linux Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-15.16)
|
upstream |
Released
(4.16~rc7)
|
|
artful |
Released
(4.13.0-45.50)
|
|
trusty |
Released
(3.13.0-151.201)
|
|
xenial |
Released
(4.4.0-127.153)
|
|
Patches: Introduced by 5320918b9a87865223fd6b228e530bf30bc64d9d |
||
linux-flo Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.16~rc7)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
xenial |
Ignored
(abandoned)
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.16~rc7)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
xenial |
Ignored
(end of life, was needs-triage)
|
|
linux-grouper Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.16~rc7)
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
xenial |
Does not exist
|
|
artful |
Does not exist
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.16~rc7)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
xenial |
Does not exist
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.16~rc7)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
xenial |
Does not exist
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.16~rc7)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
xenial |
Does not exist
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.16~rc7)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
xenial |
Does not exist
|
|
linux-aws Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1003.3)
|
upstream |
Released
(4.16~rc7)
|
|
artful |
Does not exist
|
|
trusty |
Released
(4.4.0-1022.22)
|
|
xenial |
Released
(4.4.0-1060.69)
|
|
linux-azure Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1004.4)
|
upstream |
Released
(4.16~rc7)
|
|
artful |
Does not exist
|
|
trusty |
Not vulnerable
(4.15.0-1023.24~14.04.1)
|
|
xenial |
Released
(4.15.0-1013.13~16.04.2)
|
|
linux-euclid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.16~rc7)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
xenial |
Ignored
(was needed ESM criteria)
|
|
linux-gcp Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1003.3)
|
upstream |
Released
(4.16~rc7)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
xenial |
Released
(4.13.0-1019.23)
|
|
linux-gke Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.16~rc7)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
xenial |
Ignored
(end of standard support, was needs-triage)
|
|
linux-hwe Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
upstream |
Released
(4.16~rc7)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
xenial |
Released
(4.13.0-45.50~16.04.1)
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
bionic |
Released
(4.18.0-8.9~18.04.1)
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.16~rc7)
|
|
xenial |
Released
(4.13.0-45.50~16.04.1)
|
|
linux-kvm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
(4.15.0-1004.4)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.16~rc7)
|
|
xenial |
Released
(4.4.0-1026.31)
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Released
(4.4.0-127.153~14.04.1)
|
|
upstream |
Released
(4.16~rc7)
|
|
xenial |
Does not exist
|
|
linux-maguro Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
upstream |
Released
(4.16~rc7)
|
|
xenial |
Does not exist
|
|
linux-mako Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
upstream |
Released
(4.16~rc7)
|
|
xenial |
Ignored
(abandoned)
|
|
linux-manta Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
upstream |
Released
(4.16~rc7)
|
|
xenial |
Does not exist
|
|
linux-oem Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
(4.15.0-1002.3)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.16~rc7)
|
|
xenial |
Released
(4.13.0-1030.33)
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
artful |
Released
(4.13.0-1022.23)
|
bionic |
Not vulnerable
(4.15.0-1006.7)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.16~rc7)
|
|
xenial |
Released
(4.4.0-1090.98)
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
artful |
Released
(4.4.0-1093.98)
|
bionic |
Not vulnerable
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.16~rc7)
|
|
xenial |
Released
(4.4.0-1093.98)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.8 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8781
- https://bugzilla.redhat.com/show_bug.cgi?id=1571062
- https://patchwork.freedesktop.org/patch/211845/
- https://ubuntu.com/security/notices/USN-3654-1
- https://ubuntu.com/security/notices/USN-3654-2
- https://ubuntu.com/security/notices/USN-3656-1
- https://ubuntu.com/security/notices/USN-3677-1
- https://ubuntu.com/security/notices/USN-3677-2
- https://ubuntu.com/security/notices/USN-3674-1
- https://ubuntu.com/security/notices/USN-3674-2
- NVD
- Launchpad
- Debian