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CVE-2018-1130

Published: 10 May 2018

Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in dccp_write_xmit() function in net/dccp/output.c in that allows a local user to cause a denial of service by a number of certain crafted system calls.

From the Ubuntu Security Team

It was discovered that a null pointer dereference vulnerability existed in the DCCP protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash).

Notes

AuthorNote
sbeattie
Introduced in fix for CVE-2017-8824

Mitigation

Blacklist the dccp ipv[46] autoloading aliases by adding the following
lines to /etc/modprobe.d/blacklist-dccp.conf:
  alias net-pf-2-proto-0-type-6 off
  alias net-pf-2-proto-33-type-6 off
  alias net-pf-10-proto-0-type-6 off
  alias net-pf-10-proto-33-type-6 off

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
artful
Released (4.13.0-46.51)
trusty
Released (3.13.0-153.203)
xenial
Released (4.4.0-127.153)
bionic Not vulnerable
(4.15.0-15.16)
upstream
Released (4.16~rc7)
Patches:
Introduced by

69c64866ce072dea1d1e59a0d61e0f66c0dffb76

Fixed by 67f93df79aeefc3add4e4b31a752600f834236e2
linux-goldfish
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(end of life, was needs-triage)
bionic Does not exist

upstream
Released (4.16~rc7)
linux-grouper
Launchpad, Ubuntu, Debian
artful Does not exist

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

bionic Does not exist

upstream
Released (4.16~rc7)
linux-lts-trusty
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

upstream
Released (4.16~rc7)
linux-maguro
Launchpad, Ubuntu, Debian
artful Does not exist

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

bionic Does not exist

upstream
Released (4.16~rc7)
linux-mako
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(abandoned)
bionic Does not exist

upstream
Released (4.16~rc7)
linux-aws
Launchpad, Ubuntu, Debian
artful Does not exist

trusty
Released (4.4.0-1022.22)
xenial
Released (4.4.0-1060.69)
bionic Not vulnerable
(4.15.0-1003.3)
upstream
Released (4.16~rc7)
linux-azure
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
xenial
Released (4.15.0-1013.13~16.04.2)
bionic Not vulnerable
(4.15.0-1004.4)
upstream
Released (4.16~rc7)
linux-euclid
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

xenial Ignored
(was needed ESM criteria)
bionic Does not exist

upstream
Released (4.16~rc7)
linux-flo
Launchpad, Ubuntu, Debian
artful Does not exist

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

upstream
Released (4.16~rc7)
xenial Ignored
(abandoned)
linux-gcp
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1003.3)
upstream
Released (4.16~rc7)
artful Does not exist

trusty Does not exist

xenial
Released (4.15.0-1014.14~16.04.1)
linux-gke
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.16~rc7)
artful Does not exist

trusty Does not exist

xenial Ignored
(end of standard support, was needs-triage)
linux-hwe
Launchpad, Ubuntu, Debian
bionic Not vulnerable

upstream
Released (4.16~rc7)
artful Does not exist

trusty Does not exist

xenial
Released (4.15.0-24.26~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic
Released (4.18.0-8.9~18.04.1)
artful Does not exist

trusty Does not exist

upstream
Released (4.16~rc7)
xenial
Released (4.15.0-24.26~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1004.4)
artful Does not exist

trusty Does not exist

upstream
Released (4.16~rc7)
xenial
Released (4.4.0-1026.31)
linux-lts-utopic
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.16~rc7)
xenial Does not exist

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

bionic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.16~rc7)
xenial Does not exist

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

bionic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.16~rc7)
xenial Does not exist

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

bionic Does not exist

trusty
Released (4.4.0-127.153~14.04.1)
upstream
Released (4.16~rc7)
xenial Does not exist

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

bionic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.16~rc7)
xenial Does not exist

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

bionic Not vulnerable
(4.15.0-1002.3)
trusty Does not exist

upstream
Released (4.16~rc7)
xenial
Released (4.13.0-1031.35)
linux-raspi2
Launchpad, Ubuntu, Debian
artful
Released (4.13.0-1023.24)
bionic Not vulnerable
(4.15.0-1006.7)
trusty Does not exist

upstream
Released (4.16~rc7)
xenial
Released (4.4.0-1090.98)
linux-snapdragon
Launchpad, Ubuntu, Debian
artful
Released (4.4.0-1093.98)
bionic Not vulnerable

trusty Does not exist

upstream
Released (4.16~rc7)
xenial
Released (4.4.0-1093.98)

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H