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CVE-2020-36311

Published: 7 April 2021

An issue was discovered in the Linux kernel before 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering many encrypted regions), aka CID-7be74942f184.

From the Ubuntu security team

It was discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel did not ensure enough processing time was given to perform cleanups of large SEV VMs. A local attacker could use this to cause a denial of service (soft lockup).

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
linux-aws-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(was needed now end-of-life)
groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
impish Does not exist

jammy Does not exist

linux-azure-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
impish Does not exist

focal
Released (5.8.0-1043.46~20.04.1)
jammy Does not exist

linux-gcp-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(was needed now end-of-life)
groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
impish Does not exist

jammy Does not exist

linux-oracle-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(was needed now end-of-life)
groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
impish Does not exist

jammy Does not exist

linux-riscv-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(was needed now end-of-life)
groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
impish Does not exist

jammy Does not exist

linux-aws
Launchpad, Ubuntu, Debian
groovy Ignored
(reached end-of-life)
impish Not vulnerable
(5.11.0-1006.6)
xenial Not vulnerable
(4.4.0-1001.10)
precise Does not exist

bionic Not vulnerable
(4.15.0-1001.1)
focal
Released (5.4.0-1056.59)
hirsute Not vulnerable
(5.11.0-1003.3)
trusty Not vulnerable
(4.4.0-1002.2)
upstream
Released (5.9~rc5)
jammy Not vulnerable
(5.13.0-1005.6)
linux-azure
Launchpad, Ubuntu, Debian
groovy Ignored
(reached end-of-life)
impish Not vulnerable
(5.11.0-1004.4)
focal
Released (5.4.0-1058.60)
precise Does not exist

bionic Ignored
(superseded by linux-azure-5.3)
hirsute Not vulnerable
(5.11.0-1002.2)
trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
upstream
Released (5.9~rc5)
xenial Ignored
(was needs-triage now end-of-life)
jammy Not vulnerable
(5.13.0-1006.7)
linux-gcp
Launchpad, Ubuntu, Debian
groovy Ignored
(reached end-of-life)
impish Not vulnerable
(5.11.0-1006.6)
focal
Released (5.4.0-1052.56)
precise Does not exist

trusty Does not exist

bionic Ignored
(superseded by linux-gcp-5.3)
hirsute Not vulnerable
(5.11.0-1003.3)
upstream
Released (5.9~rc5)
xenial Ignored
(was needs-triage now end-of-life)
jammy Not vulnerable
(5.13.0-1005.6)
linux-hwe-5.11
Launchpad, Ubuntu, Debian
focal Not vulnerable
(5.11.0-22.23~20.04.1)
upstream
Released (5.9~rc5)
trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

linux-raspi
Launchpad, Ubuntu, Debian
focal Not vulnerable
(AMD processors only)
impish Not vulnerable
(5.11.0-1007.7)
groovy Not vulnerable
(AMD processors only)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Not vulnerable
(5.11.0-1003.3)
upstream
Released (5.9~rc5)
jammy Not vulnerable
(5.13.0-1008.9)
linux-raspi-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(AMD processors only)
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-riscv-5.11
Launchpad, Ubuntu, Debian
focal Not vulnerable
(5.11.0-1015.16~20.04.1)
upstream
Released (5.9~rc5)
trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

linux-oem-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Not vulnerable
(5.13.0-1009.10)
hirsute Does not exist

upstream
Released (5.9~rc5)
impish Does not exist

jammy Does not exist

linux-aws-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

impish Does not exist

focal Not vulnerable
(5.11.0-1009.9~20.04.2)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-azure-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

impish Does not exist

focal Not vulnerable
(5.11.0-1007.7~20.04.2)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-oracle-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

impish Does not exist

focal Not vulnerable
(5.11.0-1008.8~20.04.1)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-bluefield
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
impish Does not exist

focal
Released (5.4.0-1019.22)
jammy Does not exist

linux
Launchpad, Ubuntu, Debian
impish Not vulnerable
(5.11.0-16.17)
bionic Not vulnerable
(4.13.0-16.19)
focal
Released (5.4.0-84.94)
groovy Ignored
(reached end-of-life)
hirsute Not vulnerable
(5.10.0-14.15)
precise Ignored
(was needs-triage ESM criteria)
trusty Not vulnerable
(3.11.0-12.19)
upstream
Released (5.9~rc5)
xenial Ignored
(was needs-triage now end-of-life)
jammy Not vulnerable
(5.13.0-19.19)
linux-hwe
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

bionic Ignored
(replaced by linux-hwe-5.4)
focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
xenial Ignored
(was needs-triage now end-of-life)
jammy Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic
Released (5.4.0-84.94~18.04.1)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-hwe-5.8
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

focal Ignored
(was pending [5.8.0-67.75] now end-of-life)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Ignored
(superseded by linux-hwe)
bionic Ignored
(superseded by linux-hwe-5.4)
focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-lts-trusty
Launchpad, Ubuntu, Debian
impish Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

precise Ignored
(was needs-triage ESM criteria)
upstream
Released (5.9~rc5)
jammy Does not exist

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

precise Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Not vulnerable
(4.4.0-13.29~14.04.1)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
impish Not vulnerable
(5.11.0-1006.6)
precise Does not exist

trusty Does not exist

bionic Not vulnerable
(4.15.0-1002.2)
focal
Released (5.4.0-1046.48)
groovy Ignored
(reached end-of-life)
hirsute Not vulnerable
(5.11.0-1003.3)
upstream
Released (5.9~rc5)
xenial Ignored
(was needs-triage now end-of-life)
jammy Not vulnerable
(5.13.0-1004.4)
linux-aws-5.0
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-aws-5.3)
focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-aws-5.4)
focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic
Released (5.4.0-1056.59~18.04.1)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-aws-hwe
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
xenial Ignored
(was needs-triage now end-of-life)
jammy Does not exist

linux-azure-4.15
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Not vulnerable
(4.15.0-1082.92)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-azure-5.4)
focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
impish Does not exist

bionic
Released (5.4.0-1058.60~18.04.1)
precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-dell300x
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Not vulnerable
(4.15.0-1005.8)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-azure-5.3)
focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-gcp-4.15
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Not vulnerable
(4.15.0-1071.81)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-gcp-5.4)
focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
impish Does not exist

bionic
Released (5.4.0-1052.56~18.04.1)
precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-gcp-5.3)
focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Ignored
(was needed now end-of-life)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-gke-5.4
Launchpad, Ubuntu, Debian
impish Does not exist

bionic
Released (5.4.0-1052.55~18.04.1)
precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-gkeop
Launchpad, Ubuntu, Debian
impish Does not exist

focal
Released (5.4.0-1023.24)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
impish Does not exist

bionic
Released (5.4.0-1023.24~18.04.1)
precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
impish Not vulnerable
(5.11.0-1005.5)
precise Does not exist

trusty Does not exist

bionic Not vulnerable
(4.15.0-1007.9)
focal
Released (5.4.0-1054.58)
groovy Ignored
(reached end-of-life)
hirsute Not vulnerable
(5.11.0-1002.2)
upstream
Released (5.9~rc5)
xenial Ignored
(was needs-triage now end-of-life)
jammy Not vulnerable
(5.13.0-1008.10)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-oracle-5.3)
focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Ignored
(superseded by linux-oracle-5.4)
focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
impish Does not exist

bionic
Released (5.4.0-1054.58~18.04.1)
precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

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

precise Does not exist

trusty Does not exist

xenial Ignored
(superseded by linux-hwe)
focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-oem-5.6
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

focal Ignored
(was needed now end-of-life)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-oem-5.10
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

focal Not vulnerable
(5.10.0-1008.9)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

focal Not vulnerable
(AMD processors only)
groovy Does not exist

hirsute Does not exist

bionic Not vulnerable
(4.13.0-1005.5)
upstream
Released (5.9~rc5)
xenial Not vulnerable
(AMD processors only)
jammy Does not exist

linux-raspi2-5.3
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Not vulnerable
(AMD processors only)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
impish Not vulnerable
(5.11.0-1007.7)
groovy Not vulnerable
(AMD processors only)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Not vulnerable
(AMD processors only)
hirsute Not vulnerable
(5.11.0-1004.4)
upstream
Released (5.9~rc5)
jammy Not vulnerable
(5.13.0-1004.4)
linux-snapdragon
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Not vulnerable
(4.4.0-1077.82)
upstream
Released (5.9~rc5)
xenial Not vulnerable
(AMD processors only)
jammy Does not exist

linux-gke
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

bionic Does not exist

focal
Released (5.4.0-1052.55)
groovy Does not exist

hirsute Does not exist

jammy Not vulnerable
(5.15.0-1002.2)
upstream
Released (5.9~rc5)
xenial Ignored
(reached end of standard support)
linux-ibm
Launchpad, Ubuntu, Debian
impish Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

focal
Released (5.4.0-1004.5)
upstream
Released (5.9~rc5)
jammy Not vulnerable
(5.15.0-1002.2)
linux-gcp-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

impish Does not exist

upstream
Released (5.9~rc5)
focal Not vulnerable
(5.11.0-1009.10~20.04.1)
jammy Does not exist

linux-oem-5.14
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

impish Does not exist

focal Not vulnerable
(5.14.0-1004.4)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-intel-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Not vulnerable

hirsute Does not exist

impish Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-azure-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.13.0-1009.10~20.04.2)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-hwe-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Not vulnerable
(5.13.0-21.21~20.04.1)
impish Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-aws-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Not vulnerable
(5.13.0-1008.9~20.04.2)
impish Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-fips
Launchpad, Ubuntu, Debian
xenial Not vulnerable
(4.4.0-1073.79)
trusty Does not exist

bionic Does not exist

focal Does not exist

hirsute Does not exist

impish Does not exist

upstream
Released (5.9~rc5)
jammy Does not exist

linux-oracle-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.13.0-1011.13~20.04.2)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-gcp-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.13.0-1008.9~20.04.3)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-ibm-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

impish Does not exist

bionic Not vulnerable
(5.4.0-1010.11~18.04.2)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-azure-fde
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.4.0-1063.66+cvm2.2)
upstream
Released (5.9~rc5)
jammy Does not exist

linux-lowlatency
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

impish Does not exist

jammy Not vulnerable

upstream Needs triage

linux-oem-5.17
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

impish Does not exist

jammy Not vulnerable

upstream Needs triage