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CVE-2018-5391

Published: 14 August 2018

The Linux kernel, versions 3.9+, is vulnerable to a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may cause a denial of service condition by sending specially crafted IP fragments. Various vulnerabilities in IP fragmentation have been discovered and fixed over the years. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size.

From the Ubuntu security team

Juha-Matti Tilli discovered that the IP implementation in the Linux kernel performed algorithmically expensive operations in some situations when handling incoming packet fragments. A remote attacker could use this to cause a denial of service.

Priority

High

CVSS 3 base score: 7.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-32.35)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-133.159)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (3.13.0-155.205)
Patches:
Introduced by c2a936600f78aea00d3312ea4b66a79a4619f9b4
Fixed by 7969e5c40dfd04799d4341f1b7cd266b6e47f227|local-2018-5391-fix
Introduced by c2a936600f78aea00d3312ea4b66a79a4619f9b4
Fixed by 385114dec8a49b5e5945e77ba7de6356106713f4|local-2018-5391-fix
Introduced by c2a936600f78aea00d3312ea4b66a79a4619f9b4
Fixed by fa0f527358bd900ef92f925878ed6bfbd51305cc|local-2018-5391-fix
Introduced by c2a936600f78aea00d3312ea4b66a79a4619f9b4
Fixed by 70837ffe3085c9a91488b52ca13ac84424da1042|local-2018-5391-fix
Introduced by c2a936600f78aea00d3312ea4b66a79a4619f9b4
Fixed by 5d407b071dc369c26a38398326ee2be53651cfe4|local-2018-5391-fix
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1019.19)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-1065.75)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.4.0-1027.30)
linux-azure
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1021.21)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-1021.21~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(4.15.0-1023.24~14.04.1)
linux-azure-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(4.18.0-1004.4~18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-1021.21)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-euclid
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-9029.31)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-gcp
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1017.18)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-1017.18~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(end-of-life)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(end-of-life)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable

Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-32.35~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(4.18.0-11.12~18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-32.35~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1019.19)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-1031.37)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [out of standard support])
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [out of standard support])
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [out of standard support])
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.4.0-133.159~14.04.1)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-oem
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1015.18)
Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(was needs-triage now end-of-life)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1020.22)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-1094.102)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable

Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-1098.103)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist