CVE-2019-20096

Published: 30 December 2019

In the Linux kernel before 5.1, there is a memory leak in __feat_register_sp() in net/dccp/feat.c, which may cause denial of service, aka CID-1d3ff0950e2b.

From the Ubuntu security team

It was discovered that the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel did not properly deallocate memory in certain error conditions. An attacker could possibly use this to cause a denial of service (kernel memory exhaustion).

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(5.4.0-9.12)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(5.4.0-9.12)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-88.88)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-174.204)
Ubuntu 14.04 ESM (Trusty Tahr) Ignored
(was needed ESM criteria)
Patches:
Introduced by e8ef967a54f401ac5e8637b7f7f8bddb006144c4
Fixed by 1d3ff0950e2b40dc861b1739029649d03f591820
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(5.4.0-1005.5)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(5.4.0-1005.5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1060.62)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1102.113)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.4.0-1062.66)
linux-aws-5.0
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver)
Released (5.0.0-1025.28)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-aws-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-1060.62~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-azure
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(5.4.0-1006.6)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(5.4.0-1006.6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (5.0.0-1032.34)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-1071.76)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.15.0-1071.76~14.04.1)
linux-azure-5.3
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(5.3.0-1007.8~18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Ignored
(was needs-triage now end-of-life)
Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(was needs-triage now end-of-life)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(5.4.0-1005.5)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(5.4.0-1005.5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (5.0.0-1031.32)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-1055.59)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(5.3.0-1008.9~18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Ignored
(was needs-triage now end-of-life)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1052.55)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver)
Released (5.0.0-1030.31)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(5.3.0-1011.12~18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver)
Released (5.3.0-26.28~18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-88.88~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Ignored
(was needs-triage now end-of-life)
Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(was needs-triage now end-of-life)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(5.4.0-1004.4)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(5.4.0-1004.4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1053.53)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1066.73)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.4.0-174.204~14.04.1)
linux-oem
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1073.83)
Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(was needs-triage now end-of-life)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-oem-5.6
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(5.4.0-1002.4)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(5.4.0-1002.4)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver)
Released (5.0.0-1039.44)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(5.4.0-1005.5)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(5.4.0-1005.5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1033.36)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-1033.36~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-oracle-5.0
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver)
Released (5.0.0-1011.16)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(5.3.0-1011.12~18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(5.4.0-1004.4)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(5.4.0-1004.4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1055.59)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1129.138)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-raspi2-5.3
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(5.3.0-1017.19~18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (5.1~rc4)
Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1072.79)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1133.141)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist