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CVE-2017-2636

Published: 7 March 2017

Race condition in drivers/tty/n_hdlc.c in the Linux kernel through 4.10.1 allows local users to gain privileges or cause a denial of service (double free) by setting the HDLC line discipline.

From the Ubuntu security team

Alexander Popov discovered that the N_HDLC line discipline implementation in the Linux kernel contained a double-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges.

Priority

High

CVSS 3 base score: 7.8

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.10.0-19.21)
precise
Released (3.2.0-124.167)
trusty
Released (3.13.0-112.159)
upstream
Released (4.11~rc2)
xenial
Released (4.4.0-66.87)
yakkety
Released (4.8.0-41.44)
zesty Not vulnerable
(4.10.0-13.15)
linux-armadaxp
Launchpad, Ubuntu, Debian
artful Does not exist

precise Does not exist
(precise was released [3.2.0-1685.112])
trusty Does not exist

upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

precise Does not exist

trusty Not vulnerable
(4.4.0-1002.2)
upstream
Released (4.11~rc2)
xenial
Released (4.4.0-1007.16)
yakkety Does not exist

zesty Does not exist

linux-azure
Launchpad, Ubuntu, Debian
artful Does not exist

precise Does not exist

trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
upstream
Released (4.11~rc2)
xenial Not vulnerable
(4.11.0-1009.9)
yakkety Does not exist

zesty Does not exist

linux-euclid
Launchpad, Ubuntu, Debian
artful Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.11~rc2)
xenial Not vulnerable
(4.4.0-9019.20)
zesty Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.11~rc2)
xenial Ignored
(abandoned)
yakkety Ignored
(abandoned)
zesty Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
artful Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.11~rc2)
xenial Not vulnerable
(4.10.0-1004.4)
yakkety Does not exist

zesty Does not exist

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

precise Does not exist

trusty Does not exist

upstream
Released (4.11~rc2)
xenial
Released (4.4.0-1005.6)
yakkety Does not exist

zesty Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.11~rc2)
xenial Ignored
(abandoned)
yakkety Ignored
(abandoned)
zesty Ignored
(abandoned)
linux-grouper
Launchpad, Ubuntu, Debian
artful Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

precise Does not exist

trusty Does not exist

upstream
Released (4.11~rc2)
xenial
Released (4.8.0-41.44~16.04.1)
yakkety Does not exist

zesty Does not exist

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

precise Does not exist

trusty Does not exist

upstream
Released (4.11~rc2)
xenial
Released (4.8.0-41.44~16.04.1)
yakkety Does not exist

zesty Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.11~rc2)
xenial Not vulnerable
(4.4.0-1004.9)
zesty Does not exist

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

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

upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

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

upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

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

upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

precise Does not exist
(precise was ignored [end-of-life])
trusty Does not exist

upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

precise Does not exist
(precise was ignored [end-of-life])
trusty Does not exist

upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

precise Does not exist
(precise was ignored [end-of-life])
trusty Does not exist

upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

precise
Released (3.13.0-112.159~precise1)
trusty Does not exist

upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored [out of standard support])
upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored [was needed now end-of-life])
upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored [out of standard support])
upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

precise Does not exist

trusty
Released (4.4.0-66.87~14.04.1)
upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.11~rc2)
xenial Ignored
(abandoned)
yakkety Ignored
(abandoned)
zesty Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-oem
Launchpad, Ubuntu, Debian
artful Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.11~rc2)
xenial Not vulnerable
(4.13.0-1008.9)
zesty Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
artful Does not exist

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

upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.10.0-1004.6)
precise Does not exist

trusty Does not exist

upstream
Released (4.11~rc2)
xenial
Released (4.4.0-1046.53)
yakkety
Released (4.8.0-1028.31)
zesty Not vulnerable
(4.10.0-1001.3)
linux-snapdragon
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.4.0-1050.54)
precise Does not exist

trusty Does not exist

upstream
Released (4.11~rc2)
xenial
Released (4.4.0-1050.54)
yakkety
Released (4.4.0-1050.54)
zesty Not vulnerable
(4.4.0-1050.54)
linux-ti-omap4
Launchpad, Ubuntu, Debian
artful Does not exist

precise Does not exist
(precise was released [3.2.0-1502.129])
trusty Does not exist

upstream
Released (4.11~rc2)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

Notes

AuthorNote
jdstrand
android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.10 and earlier preview kernels
linux-lts-saucy no longer receives official support
linux-lts-quantal no longer receives official support
tyhicks
all of our kernels are affected as CONFIG_N_HDLC=m is set
in all releases

References

Bugs