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CVE-2021-38198

Published: 8 August 2021

arch/x86/kvm/mmu/paging_tmpl.h in the Linux kernel before 5.12.11 incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault.

From the Ubuntu security team

It was discovered that the KVM hypervisor implementation in the Linux kernel did not properly compute the access permissions for shadow pages in some situations. A local attacker could use this to cause a denial of service.

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-161.169)
focal
Released (5.4.0-89.100)
hirsute
Released (5.11.0-31.33)
impish Not vulnerable
(5.13.0-14.14)
jammy Not vulnerable
(5.13.0-19.19)
trusty Ignored
(was needed ESM criteria)
upstream
Released (5.13~rc6)
xenial
Released (4.4.0-222.255)
Patches:
Introduced by

cea0f0e7ea54753c3265dc77f605a6dad1912cfc

Fixed by b1bd5cba3306691c771d558e94baa73e8b0b96b7
linux-aws
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1114.121)
focal
Released (5.4.0-1058.61)
hirsute
Released (5.11.0-1016.17)
impish Not vulnerable
(5.11.0-1015.16+21.10.1)
jammy Not vulnerable
(5.13.0-1005.6)
trusty
Released (4.4.0-1102.107)
upstream
Released (5.13~rc6)
xenial
Released (4.4.0-1138.152)
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(superseded by linux-aws-5.3)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 (5.13~rc6)
xenial Does not exist

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

focal
Released (5.11.0-1016.17~20.04.1)
hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

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

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

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

linux-aws-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Not vulnerable

jammy Does not exist

trusty Does not exist

upstream Needs triage

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(superseded by linux-aws-5.4)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 (5.13~rc6)
xenial Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1058.61~18.04.3)
focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
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 (5.13~rc6)
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 (5.13~rc6)
xenial
Released (4.15.0-1113.120~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.3)
focal
Released (5.4.0-1062.65)
hirsute
Released (5.11.0-1013.14)
impish Not vulnerable
(5.11.0-1013.14+21.10.1)
jammy Not vulnerable
(5.13.0-1006.7)
trusty
Released (4.15.0-1125.138~14.04.1)
upstream
Released (5.13~rc6)
xenial
Released (4.15.0-1125.138~16.04.1)
linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1125.138)
focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

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

focal
Released (5.11.0-1013.14~20.04.1)
hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

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

focal Not vulnerable
(5.13.0-1009.10~20.04.2)
impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

linux-azure-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Not vulnerable

jammy Does not exist

trusty Does not exist

upstream Needs triage

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 (5.13~rc6)
xenial Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1062.65~18.04.1)
focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

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

focal Ignored
(was pending [5.8.0-1043.46~20.04.1] now end-of-life)
hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
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 (5.13~rc6)
xenial Does not exist

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

focal Not vulnerable
(5.4.0-1063.66+cvm2.2)
impish Does not exist

jammy Needs triage

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

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

focal
Released (5.4.0-1020.23)
hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

linux-dell300x
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1029.34)
focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
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 (5.13~rc6)
xenial Not vulnerable
(4.4.0-1074.80)
linux-gcp
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gcp-5.3)
focal
Released (5.4.0-1056.60)
hirsute
Released (5.11.0-1017.19)
impish Not vulnerable
(5.11.0-1016.18+21.10.2)
jammy Not vulnerable
(5.13.0-1005.6)
trusty Does not exist

upstream
Released (5.13~rc6)
xenial
Released (4.15.0-1110.124~16.04.1)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1110.124)
focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

linux-gcp-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.11.0-1017.19~20.04.1)
hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

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

focal Not vulnerable
(5.13.0-1008.9~20.04.3)
impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

linux-gcp-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Not vulnerable

jammy Does not exist

trusty Does not exist

upstream Needs triage

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 (5.13~rc6)
xenial Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1056.60~18.04.1)
focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
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 (5.13~rc6)
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 (5.13~rc6)
xenial Does not exist

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

focal
Released (5.4.0-1054.57)
hirsute Does not exist

impish Does not exist

jammy Not vulnerable
(5.15.0-1002.2)
trusty Does not exist

upstream
Released (5.13~rc6)
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 (5.13~rc6)
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 (5.13~rc6)
xenial Does not exist

linux-gke-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Not vulnerable

jammy Does not exist

trusty Does not exist

upstream Needs triage

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 (5.13~rc6)
xenial Does not exist

linux-gke-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1054.57~18.04.1)
focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

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

focal
Released (5.4.0-1025.26)
hirsute Does not exist

impish Does not exist

jammy Needs triage

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1025.26~18.04.1)
focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
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 (5.13~rc6)
xenial
Released (4.15.0-161.169~16.04.1)
linux-hwe-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.11.0-34.36~20.04.1)
hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

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

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

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

linux-hwe-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Not vulnerable

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-89.100~18.04.1)
focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

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

focal Ignored
(was pending [5.8.0-67.75] now end-of-life)
hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
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 (5.13~rc6)
xenial Ignored
(superseded by linux-hwe)
linux-ibm
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1006.7)
hirsute Does not exist

impish Does not exist

jammy Not vulnerable
(5.15.0-1002.2)
trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

linux-ibm-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.4.0-1010.11~18.04.2)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

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

focal Not vulnerable
(5.13.0-1007.7)
hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

linux-intel-iotg
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-intel-iotg-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Not vulnerable

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1101.103)
focal
Released (5.4.0-1048.50)
hirsute
Released (5.11.0-1014.15)
impish Not vulnerable
(5.13.0-1001.1)
jammy Not vulnerable
(5.13.0-1004.4)
trusty Does not exist

upstream
Released (5.13~rc6)
xenial
Released (4.4.0-1103.112)
linux-lowlatency
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

impish Does not exist

jammy Not vulnerable
(5.15.0-22.22)
trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

linux-lowlatency-hwe-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Not vulnerable

jammy Does not exist

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
Released (4.4.0-222.255~14.04.1)
upstream
Released (5.13~rc6)
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 (5.13~rc6)
xenial Ignored
(superseded by linux-hwe)
linux-oem-5.10
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.10.0-1038.40)
hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

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

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

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

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

focal Not vulnerable
(5.14.0-1004.4)
hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
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
(5.17.0-1003.3)
trusty Does not exist

upstream
Released (5.13~rc6)
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 (5.13~rc6)
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 (5.13~rc6)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1082.90)
focal
Released (5.4.0-1056.60)
hirsute
Released (5.11.0-1016.17)
impish Not vulnerable
(5.11.0-1015.16+21.10.1)
jammy Not vulnerable
(5.13.0-1008.10)
trusty Does not exist

upstream
Released (5.13~rc6)
xenial
Released (4.15.0-1082.90~16.04.1)
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 (5.13~rc6)
xenial Does not exist

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

focal
Released (5.11.0-1016.17~20.04.1)
hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

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

focal Not vulnerable
(5.13.0-1011.13~20.04.2)
impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
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 (5.13~rc6)
xenial Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1056.60~18.04.1)
focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
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 (5.13~rc6)
xenial Does not exist

linux-raspi
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1045.49)
hirsute
Released (5.11.0-1016.17)
impish Not vulnerable
(5.13.0-1006.7)
jammy Not vulnerable
(5.13.0-1008.9)
trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1045.49~18.04.1)
focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1097.103)
focal Ignored
(replaced by linux-raspi)
hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
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 (5.13~rc6)
xenial Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
hirsute
Released (5.11.0-1017.18)
impish Not vulnerable
(5.13.0-1002.2)
jammy Not vulnerable
(5.13.0-1004.4)
trusty Does not exist

upstream
Released (5.13~rc6)
xenial Does not exist

linux-riscv-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.11.0-1017.18~20.04.1)
hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
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 (5.13~rc6)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1114.123)
focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.13~rc6)
xenial Ignored
(was needs-triage now end-of-life)