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CVE-2014-4943

Published: 16 July 2014

The PPPoL2TP feature in net/l2tp/l2tp_ppp.c in the Linux kernel through 3.15.6 allows local users to gain privileges by leveraging data-structure differences between an l2tp socket and an inet socket.

From the Ubuntu Security Team

Sasha Levin reported a flaw in the Linux kernel's point-to-point protocol (PPP) when used with the Layer Two Tunneling Protocol (L2TP). A local user could exploit this flaw to gain administrative privileges.

Notes

AuthorNote
jdstrand
android kernels (goldfish, grouper, maguro, mako and manta) are not
supported on the Ubuntu Touch 13.10 preview kernels
android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.04 preview kernels
Priority

High

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
lucid
Released (2.6.32-64.128)
precise
Released (3.2.0-67.101)
saucy
Released (3.11.0-26.45)
trusty
Released (3.13.0-32.57)
upstream
Released (3.16~rc6)
utopic Not vulnerable
(3.16.0-5.10)
vivid Not vulnerable
(3.16.0-23.31)
wily Not vulnerable
(3.19.0-15.15)
Patches:
Introduced by

3557baabf28088f49bdf72a048fd33ab62e205b1

Fixed by 3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
linux-armadaxp
Launchpad, Ubuntu, Debian
lucid Does not exist

precise
Released (3.2.0-1636.53)
saucy Does not exist

trusty Does not exist

upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-ec2
Launchpad, Ubuntu, Debian
lucid
Released (2.6.32-368.84)
precise Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Does not exist

saucy Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (3.16~rc6)
utopic Not vulnerable
(3.4.0-3.15)
vivid Not vulnerable
(3.4.0-3.15)
wily Not vulnerable
(3.4.0-3.15)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
lucid Ignored
(reached end-of-life, does not affect buildd)
precise Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Does not exist

saucy Ignored

trusty Does not exist
(trusty was ignored)
upstream
Released (3.16~rc6)
utopic Not vulnerable
(3.4.0-4.23)
vivid Not vulnerable
(3.4.0-4.23)
wily Not vulnerable
(3.4.0-4.23)
linux-grouper
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

saucy Ignored

trusty Does not exist
(trusty was ignored)
upstream
Released (3.16~rc6)
utopic Ignored
(reached end-of-life)
vivid Does not exist

wily Does not exist

linux-linaro-omap
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Ignored
(abandoned)
saucy Does not exist

trusty Does not exist

upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

linux-linaro-shared
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Ignored
(abandoned)
saucy Does not exist

trusty Does not exist

upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

linux-linaro-vexpress
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Ignored
(abandoned)
saucy Does not exist

trusty Does not exist

upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

linux-lts-quantal
Launchpad, Ubuntu, Debian
lucid Does not exist

precise
Released (3.5.0-54.81~precise1)
saucy Does not exist

trusty Does not exist

upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

linux-lts-raring
Launchpad, Ubuntu, Debian
lucid Does not exist

precise
Released (3.8.0-44.66~precise1)
saucy Does not exist

trusty Does not exist

upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

linux-lts-saucy
Launchpad, Ubuntu, Debian
lucid Does not exist

precise
Released (3.11.0-26.45~precise1)
saucy Does not exist

trusty Does not exist

upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

linux-lts-trusty
Launchpad, Ubuntu, Debian
lucid Does not exist

precise
Released (3.13.0-32.57~precise1)
saucy Does not exist

trusty Does not exist

upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was not-affected [3.16.0-25.33~14.04.2])
upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was not-affected [3.19.0-18.18~14.04.1])
upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Does not exist

saucy Ignored

trusty Does not exist
(trusty was ignored)
upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

precise Does not exist

saucy Ignored

trusty Does not exist
(trusty was ignored)
upstream
Released (3.16~rc6)
utopic Not vulnerable
(3.4.0-5.34)
vivid Not vulnerable
(3.4.0-5.34)
wily Not vulnerable
(3.4.0-5.34)
linux-manta
Launchpad, Ubuntu, Debian
lucid Does not exist

precise Does not exist

saucy Ignored

trusty Does not exist
(trusty was ignored)
upstream
Released (3.16~rc6)
utopic Not vulnerable
(3.4.0-6.29)
vivid Not vulnerable
(3.4.0-6.29)
wily Not vulnerable
(3.4.0-6.29)
linux-mvl-dove
Launchpad, Ubuntu, Debian
lucid Ignored
(reached end-of-life)
precise Does not exist

saucy Does not exist

trusty Does not exist

upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
lucid Ignored
(abandoned)
precise Ignored
(abandoned)
saucy Does not exist

trusty Does not exist

upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist

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

trusty Does not exist

upstream
Released (3.16~rc6)
vivid Does not exist

wily Not vulnerable
(4.2.0-1008.12)
linux-ti-omap4
Launchpad, Ubuntu, Debian
lucid Does not exist

precise
Released (3.2.0-1451.71)
saucy Ignored
(reached end-of-life)
trusty Does not exist

upstream
Released (3.16~rc6)
utopic Does not exist

vivid Does not exist

wily Does not exist