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CVE-2018-8043

Published: 10 March 2018

The unimac_mdio_probe function in drivers/net/phy/mdio-bcm-unimac.c in the Linux kernel through 4.15.8 does not validate certain resource availability, which allows local users to cause a denial of service (NULL pointer dereference).

From the Ubuntu Security Team

It was discovered that the Broadcom UniMAC MDIO bus controller driver in the Linux kernel did not properly validate device resources. A local attacker could use this to cause a denial of service (system crash).

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
upstream
Released (4.16~rc1)
bionic Not vulnerable
(4.15.0-13.14)
trusty Not vulnerable

xenial
Released (4.4.0-119.143)
artful
Released (4.13.0-39.44)
Patches:
Introduced by

2ba1b163c9d5d716fb1061f3fb76832cc6eea37f

Fixed by 297a6961ffb8ff4dc66c9fbf53b924bd1dda05d5
linux-armadaxp
Launchpad, Ubuntu, Debian
upstream
Released (4.16~rc1)
bionic Does not exist

trusty Does not exist

xenial Does not exist

artful Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-goldfish
Launchpad, Ubuntu, Debian
upstream
Released (4.16~rc1)
bionic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Not vulnerable

artful Does not exist

linux-grouper
Launchpad, Ubuntu, Debian
upstream
Released (4.16~rc1)
bionic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Does not exist

artful Does not exist

linux-flo
Launchpad, Ubuntu, Debian
upstream
Released (4.16~rc1)
bionic Does not exist

artful Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(abandoned)
linux-aws
Launchpad, Ubuntu, Debian
upstream
Released (4.16~rc1)
bionic Not vulnerable
(4.15.0-1003.3)
artful Does not exist

trusty
Released (4.4.0-1016.16)
xenial
Released (4.4.0-1054.63)
linux-hwe
Launchpad, Ubuntu, Debian
upstream
Released (4.16~rc1)
bionic Not vulnerable

artful Does not exist

trusty Does not exist

xenial
Released (4.13.0-39.44~16.04.1)
linux-gke
Launchpad, Ubuntu, Debian
upstream
Released (4.16~rc1)
bionic Does not exist

artful Does not exist

trusty Does not exist

xenial Ignored
(end of standard support, was needed)
linux-azure
Launchpad, Ubuntu, Debian
upstream
Released (4.16~rc1)
bionic Not vulnerable
(4.15.0-1003.3)
artful Does not exist

trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
xenial
Released (4.13.0-1014.17)
linux-gcp
Launchpad, Ubuntu, Debian
upstream
Released (4.16~rc1)
bionic Not vulnerable
(4.15.0-1003.3)
artful Does not exist

trusty Does not exist

xenial
Released (4.13.0-1013.17)
linux-euclid
Launchpad, Ubuntu, Debian
upstream
Released (4.16~rc1)
bionic Does not exist

artful Does not exist

trusty Does not exist

xenial Ignored
(was needed ESM criteria)
linux-linaro-omap
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

artful Does not exist

bionic Does not exist

upstream
Released (4.16~rc1)
linux-linaro-shared
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

artful Does not exist

bionic Does not exist

upstream
Released (4.16~rc1)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

artful Does not exist

bionic Does not exist

upstream
Released (4.16~rc1)
linux-lts-quantal
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

artful Does not exist

bionic Does not exist

upstream
Released (4.16~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

artful Does not exist

bionic Does not exist

upstream
Released (4.16~rc1)
linux-lts-saucy
Launchpad, Ubuntu, Debian
trusty Does not exist

artful Does not exist

bionic Does not exist

upstream
Released (4.16~rc1)
xenial Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-hwe-edge
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.18.0-8.9~18.04.1)
trusty Does not exist

upstream
Released (4.16~rc1)
xenial
Released (4.13.0-39.44~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.15.0-1003.3)
trusty Does not exist

upstream
Released (4.16~rc1)
xenial
Released (4.4.0-1021.26)
linux-lts-trusty
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty Does not exist

upstream
Released (4.16~rc1)
xenial Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.16~rc1)
xenial Does not exist

linux-lts-vivid
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty Ignored
(end of life, was needs-triage)
upstream
Released (4.16~rc1)
xenial Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.16~rc1)
xenial Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty
Released (4.4.0-119.143~14.04.1)
upstream
Released (4.16~rc1)
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~rc1)
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~rc1)
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~rc1)
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~rc1)
xenial
Released (4.13.0-1024.27)
linux-qcm-msm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty Does not exist

upstream
Released (4.16~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
artful
Released (4.13.0-1017.18)
bionic Not vulnerable
(4.15.0-1006.7)
trusty Does not exist

upstream
Released (4.16~rc1)
xenial
Released (4.4.0-1087.95)
linux-snapdragon
Launchpad, Ubuntu, Debian
artful
Released (4.4.0-1090.95)
bionic Not vulnerable

trusty Does not exist

upstream
Released (4.16~rc1)
xenial
Released (4.4.0-1090.95)
linux-ti-omap4
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty Does not exist

upstream
Released (4.16~rc1)
xenial Does not exist

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H