CVE-2021-3772

Published: 9 September 2021

A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses.

From the Ubuntu security team

It was discovered that the SCTP protocol implementation in the Linux kernel did not properly verify VTAGs in some situations. A remote attacker could possibly use this to cause a denial of service (connection disassociation).

Priority

CVSS 3 base score: 6.5

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Needed
	hirsute	Ignored (was pending [5.11.0-50.56] now end-of-life)
	impish	Released (5.13.0-28.31)
	jammy	Not vulnerable (5.15.0-17.17)
	trusty	Ignored (was needed ESM criteria)
	upstream	Released (5.15)
	xenial	Ignored (was needed ESM criteria)
linux-aws Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Needed
	hirsute	Ignored (reached end-of-life)
	impish	Released (5.13.0-1012.13)
	jammy	Not vulnerable (5.15.0-1002.4)
	trusty	Ignored (was needed ESM criteria)
	upstream	Released (5.15)
	xenial	Ignored (was needed ESM criteria)
linux-aws-5.0 Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-aws-5.3)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-aws-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.11.0-1028.31~20.04.1)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-aws-5.13 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.13.0-1012.13~20.04.1)
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-aws-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-aws-5.4)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-aws-5.4 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-aws-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-aws-hwe Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Ignored (was needed ESM criteria)
linux-azure Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-azure-5.3)
	focal	Needed
	hirsute	Ignored (reached end-of-life)
	impish	Released (5.13.0-1013.15)
	jammy	Not vulnerable (5.15.0-1001.2)
	trusty	Ignored (was needed ESM criteria)
	upstream	Released (5.15)
	xenial	Ignored (was needed ESM criteria)
linux-azure-4.15 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-azure-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.11.0-1028.31~20.04.2)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-azure-5.13 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.13.0-1013.15~20.04.1)
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-azure-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-azure-5.4)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-azure-5.4 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-azure-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-azure-edge Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-azure-5.3)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-azure-fde Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Needed
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-bluefield Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Needed
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-dell300x Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-fips Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Ignored (was needed ESM criteria)
linux-gcp Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-gcp-5.3)
	focal	Needed
	hirsute	Ignored (reached end-of-life)
	impish	Released (5.13.0-1013.16)
	jammy	Not vulnerable (5.15.0-1001.3)
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Ignored (was needed ESM criteria)
linux-gcp-4.15 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-gcp-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.11.0-1029.33~20.04.3)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-gcp-5.13 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.13.0-1013.16~20.04.1)
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-gcp-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-gcp-5.4)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-gcp-5.4 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-gcp-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-gcp-edge Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-gcp-5.3)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-gke Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Needed
	hirsute	Does not exist
	impish	Does not exist
	jammy	Needs triage
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Ignored (reached end of standard support)
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Ignored (was needs-triage now end-of-life)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	bionic	Ignored (was needs-triage now end-of-life)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-gke-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (was needs-triage now end-of-life)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-gke-5.4 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-gkeop Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Needed
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-gkeop-5.4 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	bionic	Ignored (replaced by linux-hwe-5.4)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Ignored (was needed ESM criteria)
linux-hwe-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (was needed now end-of-life)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-hwe-5.13 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.13.0-28.31~20.04.1)
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-hwe-5.4 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-hwe-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (was needed now end-of-life)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-hwe-edge Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-hwe-5.4)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Ignored (superseded by linux-hwe)
linux-ibm Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Needed
	hirsute	Does not exist
	impish	Does not exist
	jammy	Not vulnerable (5.15.0-1002.2)
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-ibm-5.4 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-intel-5.13 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-kvm Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Needed
	hirsute	Ignored (reached end-of-life)
	impish	Released (5.13.0-1011.12)
	jammy	Not vulnerable (5.15.0-1002.2)
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Ignored (was needed ESM criteria)
linux-lowlatency Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	impish	Does not exist
	jammy	Not vulnerable
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Ignored (was needed ESM criteria)
	upstream	Released (5.15)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Ignored (was needs-triage now end-of-life)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Ignored (superseded by linux-hwe)
linux-oem-5.10 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (was needed now end-of-life)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-oem-5.13 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.13.0-1029.36)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-oem-5.14 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.14.0-1008.8)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-oem-5.17 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	impish	Does not exist
	jammy	Not vulnerable
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
linux-oem-5.6 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-oem-osp1 Launchpad, Ubuntu, Debian	bionic	Ignored (was needs-triage now end-of-life)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-oracle Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Needed
	hirsute	Ignored (reached end-of-life)
	impish	Released (5.13.0-1016.20)
	jammy	Not vulnerable (5.15.0-1001.3)
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Ignored (was needed ESM criteria)
linux-oracle-5.0 Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-oracle-5.3)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-oracle-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.11.0-1028.31~20.04.1)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-oracle-5.13 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.13.0-1016.20~20.04.1)
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-oracle-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-oracle-5.4)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-oracle-5.4 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-oracle-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-raspi Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Needed
	hirsute	Ignored (reached end-of-life)
	impish	Released (5.13.0-1016.18)
	jammy	Not vulnerable (5.15.0-1002.2)
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-raspi-5.4 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Ignored (replaced by linux-raspi)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Ignored (was needs-triage now end-of-life)
linux-raspi2-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (was needs-triage now end-of-life)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-riscv Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (superseded by linux-riscv-5.8)
	hirsute	Ignored (reached end-of-life)
	impish	Released (5.13.0-1011.12)
	jammy	Not vulnerable (5.15.0-1004.4)
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-riscv-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (was pending [5.11.0-1029.32~20.04.1] now end-of-life)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-riscv-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Does not exist
linux-snapdragon Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	trusty	Does not exist
	upstream	Released (5.15)
	xenial	Ignored (was needs-triage now end-of-life)

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