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CVE-2015-8709

Published: 12 December 2015

** DISPUTED ** kernel/ptrace.c in the Linux kernel through 4.4.1 mishandles uid and gid mappings, which allows local users to gain privileges by establishing a user namespace, waiting for a root process to enter that namespace with an unsafe uid or gid, and then using the ptrace system call. NOTE: the vendor states "there is no kernel bug here."

From the Ubuntu security team

Jann Horn discovered a ptrace issue with user namespaces in the Linux kernel. The namespace owner could potentially exploit this flaw by ptracing a root owned process entering the user namespace to elevate its privileges and potentially gain access outside of the namespace. (http://bugs.launchpad.net/bugs/1527374, CVE-2015-8709)

Priority

Medium

CVSS 3 base score: 7.0

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
precise Not vulnerable
(no userns support)
trusty
Released (3.13.0-103.150)
upstream
Released (4.10~rc1)
vivid
Released (3.19.0-75.83)
wily
Released (4.2.0-22.27)
xenial
Released (4.4.0-51.72)
yakkety
Released (4.8.0-28.30)
zesty Not vulnerable
(4.9.0-12.13)
linux-armadaxp
Launchpad, Ubuntu, Debian
precise Does not exist
(precise was needed)
trusty Does not exist

upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-aws
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Not vulnerable
(4.4.0-1002.2)
upstream
Released (4.10~rc1)
xenial Not vulnerable
(4.4.0-1001.10)
yakkety Does not exist

zesty Does not exist

linux-flo
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.10~rc1)
vivid Ignored
(reached end-of-life)
wily Ignored
(reached end-of-life)
xenial Ignored
(abandoned)
yakkety Ignored
(abandoned)
zesty Does not exist

linux-fsl-imx51
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist

upstream
Released (4.10~rc1)
xenial Not vulnerable
(4.4.0-1003.3)
yakkety Does not exist

zesty Does not exist

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

trusty Does not exist
(trusty was ignored)
upstream
Released (4.10~rc1)
vivid Ignored
(reached end-of-life)
wily Ignored
(reached end-of-life)
xenial Ignored
(abandoned)
yakkety Ignored
(abandoned)
zesty Ignored
(abandoned)
linux-grouper
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.10~rc1)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
yakkety Does not exist

zesty Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.10~rc1)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
yakkety Does not exist

zesty Does not exist

linux-linaro-omap
Launchpad, Ubuntu, Debian
precise Does not exist
(precise was ignored [abandoned])
trusty Does not exist

upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-shared
Launchpad, Ubuntu, Debian
precise Does not exist
(precise was ignored [abandoned])
trusty Does not exist

upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-vexpress
Launchpad, Ubuntu, Debian
precise Does not exist
(precise was ignored [abandoned])
trusty Does not exist

upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-quantal
Launchpad, Ubuntu, Debian
precise Does not exist
(precise was ignored [end-of-life])
trusty Does not exist

upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-raring
Launchpad, Ubuntu, Debian
precise Does not exist
(precise was ignored [end-of-life])
trusty Does not exist

upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-saucy
Launchpad, Ubuntu, Debian
precise Does not exist
(precise was ignored [end-of-life])
trusty Does not exist

upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-trusty
Launchpad, Ubuntu, Debian
precise
Released (3.13.0-103.150~precise1)
trusty Does not exist

upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist
(trusty was released [3.16.0-57.77~14.04.1])
upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist
(trusty was released [3.19.0-75.83~14.04.1])
upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist
(trusty was released [4.2.0-22.27~14.04.1])
upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty
Released (4.4.0-51.72~14.04.1)
upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist
(trusty was ignored)
upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist
(trusty was ignored)
upstream
Released (4.10~rc1)
vivid Ignored
(reached end-of-life)
wily Ignored
(reached end-of-life)
xenial Ignored
(abandoned)
yakkety Ignored
(abandoned)
zesty Does not exist

linux-manta
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.10~rc1)
vivid Ignored
(reached end-of-life)
wily Ignored
(reached end-of-life)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
precise Does not exist
(precise was ignored [abandoned])
trusty Does not exist

upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.10~rc1)
vivid Does not exist

wily
Released (4.2.0-1017.24)
xenial
Released (4.4.0-1038.45)
yakkety
Released (4.8.0-1021.24)
zesty Not vulnerable
(4.8.0-1021.24)
linux-snapdragon
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.10~rc1)
wily Does not exist

xenial
Released (4.4.0-1042.46)
yakkety
Released (4.4.0-1046.50)
zesty Not vulnerable
(4.4.0-1046.50)
linux-ti-omap4
Launchpad, Ubuntu, Debian
precise Does not exist
(precise was not-affected [no userns support])
trusty Does not exist

upstream
Released (4.10~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist