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

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

References

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