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CVE-2017-6346

Published: 1 March 2017

Race condition in net/packet/af_packet.c in the Linux kernel before 4.9.13 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a multithreaded application that makes PACKET_FANOUT setsockopt system calls.

From the Ubuntu Security Team

It was discovered that a race condition existed in the AF_PACKET handling code in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

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

Priority

Medium

Cvss 3 Severity Score

7.0

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.10.0-19.21)
trusty
Released (3.13.0-132.181)
xenial
Released (4.4.0-75.96)
precise Ignored
(end of life)
yakkety Ignored
(end of life)
upstream
Released (4.10)
zesty Not vulnerable
(4.10.0-9.11)
Patches:
Introduced by

dc99f600698dcac69b8f56dda9a8a00d645c5ffc

Fixed by d199fab63c11998a602205f7ee7ff7c05c97164b
linux-flo
Launchpad, Ubuntu, Debian
artful Does not exist

precise Does not exist

yakkety Ignored
(end of life)
trusty Does not exist
(trusty was ignored)
upstream
Released (4.10)
xenial Ignored
(abandoned)
zesty Does not exist

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

artful Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.10)
linux-raspi2
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.10.0-1004.6)
xenial
Released (4.4.0-1054.61)
zesty Not vulnerable
(4.10.0-1001.3)
yakkety Ignored
(end of life)
precise Does not exist

trusty Does not exist

upstream
Released (4.10)
linux-lts-vivid
Launchpad, Ubuntu, Debian
precise Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

trusty Ignored
(end of life, was needed)
artful Does not exist

upstream
Released (4.10)
linux-aws
Launchpad, Ubuntu, Debian
artful Does not exist

precise Does not exist

trusty Not vulnerable
(4.4.0-1002.2)
xenial
Released (4.4.0-1016.25)
yakkety Does not exist

zesty Does not exist

upstream
Released (4.10)
linux-azure
Launchpad, Ubuntu, Debian
artful Does not exist

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

zesty Does not exist

upstream
Released (4.10)
linux-euclid
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

xenial Ignored
(was needed ESM criteria)
upstream
Released (4.10)
zesty Does not exist

linux-armadaxp
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
artful Does not exist

trusty Does not exist

upstream
Released (4.10)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-goldfish
Launchpad, Ubuntu, Debian
yakkety Ignored
(end of life)
zesty Ignored
(end of life)
artful Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.10)
xenial Ignored
(abandoned)
linux-linaro-omap
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
artful Does not exist

trusty Does not exist

upstream
Released (4.10)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-shared
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
artful Does not exist

trusty Does not exist

upstream
Released (4.10)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-vexpress
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
artful Does not exist

trusty Does not exist

upstream
Released (4.10)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-quantal
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
artful Does not exist

trusty Does not exist

upstream
Released (4.10)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
artful Does not exist

trusty Does not exist

upstream
Released (4.10)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-saucy
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
artful Does not exist

trusty Does not exist

upstream
Released (4.10)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
artful Does not exist

trusty Does not exist

upstream
Released (4.10)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
trusty Does not exist
(trusty was ignored [end of standard support])
artful Does not exist

precise Does not exist

upstream
Released (4.10)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-mako
Launchpad, Ubuntu, Debian
yakkety Ignored
(end of life)
artful Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.10)
xenial Ignored
(abandoned)
zesty Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
artful Does not exist

trusty Does not exist

upstream
Released (4.10)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-ti-omap4
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
artful Does not exist

trusty Does not exist

upstream
Released (4.10)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist

upstream
Released (4.10)
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 (4.10)
xenial
Released (4.4.0-1012.12)
yakkety Does not exist

zesty Does not exist

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

precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.10)
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 (4.10)
xenial
Released (4.10.0-27.30~16.04.2)
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 (4.10)
xenial
Released (4.10.0-27.30~16.04.2)
yakkety Does not exist

zesty Does not exist

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

trusty Does not exist

upstream
Released (4.10)
xenial Not vulnerable
(4.4.0-1004.9)
zesty Does not exist

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

precise Does not exist

trusty
Released (4.4.0-75.96~14.04.1)
upstream
Released (4.10)
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 (4.10)
xenial Does not exist

yakkety Does not exist

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 (4.10)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist

upstream
Released (4.10)
xenial Not vulnerable
(4.13.0-1008.9)
zesty Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.4.0-1057.61)
precise Does not exist

trusty Does not exist

upstream
Released (4.10)
xenial
Released (4.4.0-1057.61)
yakkety
Released (4.4.0-1057.61)
zesty
Released (4.4.0-1057.61)

Severity score breakdown

Parameter Value
Base score 7.0
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H