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CVE-2019-6133

Published: 11 January 2019

In PolicyKit (aka polkit) 0.115, the "start time" protection mechanism can be bypassed because fork() is not atomic, and therefore authorization decisions are improperly cached. This is related to lack of uid checking in polkitbackend/polkitbackendinteractiveauthority.c.

From the Ubuntu security team

Jann Horn discovered a race condition in the fork() system call in the Linux kernel. A local attacker could use this to gain access to services that cache authorizations.

Priority

Medium

CVSS 3 base score: 6.7

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-46.49)
cosmic
Released (4.18.0-16.17)
disco Not vulnerable
(4.19.0-12.13)
precise Ignored
(was needed ESM criteria)
trusty
Released (3.13.0-166.216)
upstream
Released (5.0~rc2)
xenial
Released (4.4.0-143.169)
linux-aws
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1033.35)
cosmic
Released (4.18.0-1011.13)
disco Not vulnerable
(4.18.0-1011.13)
precise Does not exist

trusty
Released (4.4.0-1039.42)
upstream
Released (5.0~rc2)
xenial
Released (4.4.0-1077.87)
linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial
Released (4.15.0-1033.35~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic
Released (4.18.0-1013.13~18.04.1)
cosmic
Released (4.18.0-1013.13)
disco Not vulnerable
(4.18.0-1013.13)
precise Does not exist

trusty
Released (4.15.0-1040.44~14.04.1)
upstream
Released (5.0~rc2)
xenial
Released (4.15.0-1040.44)
linux-azure-edge
Launchpad, Ubuntu, Debian
bionic
Released (4.18.0-1013.13~18.04.1)
cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial
Released (4.15.0-1040.44)
linux-euclid
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial Ignored
(was needed ESM criteria)
linux-flo
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (5.0~rc2)
xenial Ignored
(abandoned)
linux-gcp
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1028.29)
cosmic
Released (4.18.0-1007.8)
disco Not vulnerable
(4.18.0-1007.8)
precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial
Released (4.15.0-1028.29~16.04.1)
linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1028.29)
cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial Does not exist

linux-gke
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial Ignored
(end-of-life)
linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1030.32)
disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1011.11~18.04.1)
disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (5.0~rc2)
xenial Ignored
(end-of-life)
linux-grouper
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (5.0~rc2)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic
Released (4.18.0-16.17~18.04.1)
cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial
Released (4.15.0-46.49~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-15.16~18.04.1)
cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial
Released (4.15.0-46.49~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1030.30)
cosmic
Released (4.18.0-1008.8)
disco Not vulnerable
(4.18.0-1008.8)
precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial
Released (4.4.0-1041.47)
linux-lts-trusty
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

precise
Released (3.13.0-166.216~precise1)
trusty Does not exist

upstream
Released (5.0~rc2)
xenial Does not exist

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

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [end-of-life])
upstream
Released (5.0~rc2)
xenial Does not exist

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

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [end-of-life])
upstream
Released (5.0~rc2)
xenial Does not exist

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

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [end-of-life])
upstream
Released (5.0~rc2)
xenial Does not exist

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

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty
Released (4.4.0-143.169~14.04.2)
upstream
Released (5.0~rc2)
xenial Does not exist

linux-maguro
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (5.0~rc2)
xenial Does not exist

linux-mako
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (5.0~rc2)
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (5.0~rc2)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1034.39)
cosmic
Released (4.15.0-1034.39)
disco Not vulnerable
(4.15.0-1034.39)
precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial Ignored
(was needs-triage now end-of-life)
linux-oracle
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1009.11)
cosmic
Released (4.15.0-1009.11)
disco Not vulnerable
(4.15.0-1009.11)
precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial
Released (4.15.0-1009.11~16.04.1)
linux-raspi2
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1032.34)
cosmic
Released (4.18.0-1010.12)
disco Not vulnerable
(4.18.0-1010.12)
precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial
Released (4.4.0-1104.112)
linux-snapdragon
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1053.57)
cosmic Does not exist

disco Not vulnerable
(5.0.0-1010.10)
precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc2)
xenial
Released (4.4.0-1108.113)
policykit-1
Launchpad, Ubuntu, Debian
bionic
Released (0.105-20ubuntu0.18.04.5)
cosmic
Released (0.105-21ubuntu0.4)
disco
Released (0.105-25)
precise
Released (0.104-1ubuntu1.5)
trusty
Released (0.105-4ubuntu3.14.04.6)
upstream Needs triage

xenial
Released (0.105-14.1ubuntu0.5)