Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2016-4998

Published: 24 June 2016

The IPT_SO_SET_REPLACE setsockopt implementation in the netfilter subsystem in the Linux kernel before 4.6 allows local users to cause a denial of service (out-of-bounds read) or possibly obtain sensitive information from kernel heap memory by leveraging in-container root access to provide a crafted offset value that leads to crossing a ruleset blob boundary.

From the Ubuntu Security Team

Jesse Hertz and Tim Newsham discovered that the Linux netfilter implementation did not correctly perform validation when handling IPT_SO_SET_REPLACE events. A local unprivileged attacker could use this to cause a denial of service (system crash) or obtain potentially sensitive information from kernel memory.

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
seth-arnold
Can be mitigated against by a sysctl to disable userns support

Priority

Medium

Cvss 3 Severity Score

7.1

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty
Released (3.13.0-91.138)
wily
Released (4.2.0-41.48)
xenial
Released (4.4.0-28.47)
yakkety Not vulnerable
(4.4.0-28.47)
zesty Not vulnerable
(4.8.0-22.24)
upstream
Released (4.7~rc1)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by ce683e5f9d045e5d67d1312a42b359cb2ab2a13c
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by 6e94e0cfb0887e4013b3b930fa6ab1fe6bb6ba91
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by bdf533de6968e9686df777dc178486f600c6e617
linux-armadaxp
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Not vulnerable
(4.4.0-1002.2)
xenial Not vulnerable
(4.4.0-1001.10)
yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-flo
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
wily Ignored
(end of life)
xenial Ignored
(abandoned)
yakkety Ignored
(end of life)
zesty Does not exist

upstream
Released (4.7~rc1)
linux-gke
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

xenial Not vulnerable
(4.4.0-1003.3)
yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-goldfish
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
wily Ignored
(end of life)
xenial Ignored
(abandoned)
yakkety Ignored
(end of life)
zesty Ignored
(end of life)
upstream
Released (4.7~rc1)
linux-grouper
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-hwe
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

xenial Not vulnerable
(4.8.0-36.36~16.04.1)
yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

xenial Not vulnerable
(4.8.0-36.36~16.04.1)
yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-linaro-omap
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-linaro-shared
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-lts-quantal
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-lts-saucy
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
precise
Released (3.13.0-91.138~precise1)
trusty Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-lts-utopic
Launchpad, Ubuntu, Debian
precise Does not exist

trusty
Released (3.16.0-76.98~14.04.1)
wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-lts-vivid
Launchpad, Ubuntu, Debian
precise Does not exist

trusty
Released (3.19.0-64.72~14.04.1)
wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-lts-wily
Launchpad, Ubuntu, Debian
precise Does not exist

trusty
Released (4.2.0-41.48~14.04.1)
wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-lts-xenial
Launchpad, Ubuntu, Debian
precise Does not exist

trusty
Released (4.4.0-28.47~14.04.1)
wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-maguro
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-mako
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
wily Ignored
(end of life)
xenial Ignored
(abandoned)
yakkety Ignored
(end of life)
zesty Does not exist

upstream
Released (4.7~rc1)
linux-manta
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
wily Ignored
(end of life)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-qcm-msm
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)
linux-raspi2
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

wily
Released (4.2.0-1033.43)
xenial
Released (4.4.0-1016.22)
yakkety Not vulnerable
(4.4.0-1016.22)
zesty Not vulnerable
(4.8.0-1013.15)
upstream
Released (4.7~rc1)
linux-snapdragon
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

wily Does not exist

xenial
Released (4.4.0-1019.22)
yakkety Not vulnerable
(4.4.0-1019.22)
zesty Not vulnerable
(4.4.0-1029.32)
upstream
Released (4.7~rc1)
linux-ti-omap4
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.7~rc1)

Severity score breakdown

Parameter Value
Base score 7.1
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H