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

CVSS 3 base score: 5.5

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	hirsute	Released (5.11.0-31.33)
	trusty	Ignored (was needed ESM criteria)
	xenial	Released (4.4.0-222.255)
	impish	Not vulnerable (5.13.0-14.14)
	upstream	Released (5.13~rc6)
	bionic	Released (4.15.0-161.169)
	focal	Released (5.4.0-89.100)
	jammy	Not vulnerable (5.13.0-19.19)
linux-hwe Launchpad, Ubuntu, Debian	bionic	Ignored (replaced by linux-hwe-5.4)
	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	impish	Does not exist
	xenial	Released (4.15.0-161.169~16.04.1)
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-hwe-5.4 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	bionic	Released (5.4.0-89.100~18.04.1)
	jammy	Does not exist
linux-hwe-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	focal	Ignored (was pending [5.8.0-67.75] now end-of-life)
	jammy	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linux-hwe-edge Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-hwe-5.4)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
	trusty	Does not exist
	xenial	Ignored (superseded by linux-hwe)
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	trusty	Released (4.4.0-222.255~14.04.1)
	jammy	Does not exist
linux-aws-5.0 Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-aws-5.3)
	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	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linux-aws-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-aws-5.4)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
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-aws-5.4 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	bionic	Released (5.4.0-1058.61~18.04.3)
	jammy	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
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-aws-hwe Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	impish	Does not exist
	xenial	Released (4.15.0-1113.120~16.04.1)
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-azure Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-azure-5.3)
	focal	Released (5.4.0-1062.65)
	impish	Not vulnerable (5.11.0-1013.14+21.10.1)
	trusty	Released (4.15.0-1125.138~14.04.1)
	xenial	Released (4.15.0-1125.138~16.04.1)
	upstream	Released (5.13~rc6)
	hirsute	Released (5.11.0-1013.14)
	jammy	Not vulnerable (5.13.0-1006.7)
linux-azure-4.15 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	bionic	Released (4.15.0-1125.138)
	jammy	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
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-azure-5.4 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	bionic	Released (5.4.0-1062.65~18.04.1)
	jammy	Does not exist
linux-azure-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	focal	Ignored (was pending [5.8.0-1043.46~20.04.1] now end-of-life)
	jammy	Does not exist
linux-bluefield Launchpad, Ubuntu, Debian	bionic	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	focal	Released (5.4.0-1020.23)
	jammy	Does not exist
linux-dell300x Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	bionic	Released (4.15.0-1029.34)
	jammy	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
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-gcp-5.3)
	trusty	Does not exist
	impish	Not vulnerable (5.11.0-1016.18+21.10.2)
	xenial	Released (4.15.0-1110.124~16.04.1)
	hirsute	Released (5.11.0-1017.19)
	upstream	Released (5.13~rc6)
	focal	Released (5.4.0-1056.60)
	jammy	Not vulnerable (5.13.0-1005.6)
linux-gcp-4.15 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	bionic	Released (4.15.0-1110.124)
	jammy	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
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-gcp-5.4 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	bionic	Released (5.4.0-1056.60~18.04.1)
	jammy	Does not exist
linux-gcp-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.13~rc6)
	jammy	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
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-gke Launchpad, Ubuntu, Debian	bionic	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Ignored (reached end of standard support)
	impish	Does not exist
	upstream	Released (5.13~rc6)
	focal	Released (5.4.0-1054.57)
	jammy	Not vulnerable (5.15.0-1002.2)
linux-gke-4.15 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	upstream	Released (5.13~rc6)
	bionic	Ignored (was needs-triage now end-of-life)
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	jammy	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	upstream	Released (5.13~rc6)
	bionic	Ignored (was needs-triage now end-of-life)
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	jammy	Does not exist
linux-gke-5.3 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	bionic	Ignored (was needs-triage now end-of-life)
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-gke-5.4 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	bionic	Released (5.4.0-1054.57~18.04.1)
	jammy	Does not exist
linux-gkeop Launchpad, Ubuntu, Debian	bionic	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	focal	Released (5.4.0-1025.26)
	jammy	Does not exist
linux-gkeop-5.4 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	bionic	Released (5.4.0-1025.26~18.04.1)
	jammy	Does not exist
linux-oracle-5.0 Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-oracle-5.3)
	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	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
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-oracle-5.4 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	bionic	Released (5.4.0-1056.60~18.04.1)
	jammy	Does not exist
linux-oracle-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-oem Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	bionic	Ignored (was needs-triage now end-of-life)
	trusty	Does not exist
	xenial	Ignored (superseded by linux-hwe)
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-oem-5.6 Launchpad, Ubuntu, Debian	bionic	Does not exist
	hirsute	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-oem-5.10 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.10.0-1038.40)
	hirsute	Does not exist
	upstream	Released (5.13~rc6)
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	jammy	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
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-raspi Launchpad, Ubuntu, Debian	bionic	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Not vulnerable (5.13.0-1006.7)
	focal	Released (5.4.0-1045.49)
	upstream	Released (5.13~rc6)
	hirsute	Released (5.11.0-1016.17)
	jammy	Not vulnerable (5.13.0-1008.9)
linux-raspi2 Launchpad, Ubuntu, Debian	focal	Ignored (replaced by linux-raspi)
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Ignored (was needs-triage now end-of-life)
	impish	Does not exist
	bionic	Released (4.15.0-1097.103)
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-raspi2-5.3 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	bionic	Ignored (was needs-triage now end-of-life)
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-raspi-5.4 Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	upstream	Released (5.13~rc6)
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	bionic	Released (5.4.0-1045.49~18.04.1)
	jammy	Does not exist
linux-riscv Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	trusty	Does not exist
	xenial	Does not exist
	impish	Not vulnerable (5.13.0-1002.2)
	upstream	Released (5.13~rc6)
	hirsute	Released (5.11.0-1017.18)
	jammy	Not vulnerable (5.13.0-1004.4)
linux-riscv-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-snapdragon Launchpad, Ubuntu, Debian	focal	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Ignored (was needs-triage now end-of-life)
	impish	Does not exist
	bionic	Released (4.15.0-1114.123)
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-hwe-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	focal	Released (5.11.0-34.36~20.04.1)
	jammy	Does not exist
linux-riscv-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	focal	Released (5.11.0-1017.18~20.04.1)
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-kvm Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Released (4.4.0-1103.112)
	impish	Not vulnerable (5.13.0-1001.1)
	bionic	Released (4.15.0-1101.103)
	focal	Released (5.4.0-1048.50)
	upstream	Released (5.13~rc6)
	hirsute	Released (5.11.0-1014.15)
	jammy	Not vulnerable (5.13.0-1004.4)
linux-aws Launchpad, Ubuntu, Debian	trusty	Released (4.4.0-1102.107)
	xenial	Released (4.4.0-1138.152)
	impish	Not vulnerable (5.11.0-1015.16+21.10.1)
	focal	Released (5.4.0-1058.61)
	upstream	Released (5.13~rc6)
	bionic	Released (4.15.0-1114.121)
	hirsute	Released (5.11.0-1016.17)
	jammy	Not vulnerable (5.13.0-1005.6)
linux-oracle Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Released (4.15.0-1082.90~16.04.1)
	impish	Not vulnerable (5.11.0-1015.16+21.10.1)
	upstream	Released (5.13~rc6)
	hirsute	Released (5.11.0-1016.17)
	bionic	Released (4.15.0-1082.90)
	focal	Released (5.4.0-1056.60)
	jammy	Not vulnerable (5.13.0-1008.10)
linux-oem-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	bionic	Does not exist
	focal	Not vulnerable (5.13.0-1009.10)
	hirsute	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-aws-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	upstream	Released (5.13~rc6)
	focal	Released (5.11.0-1016.17~20.04.1)
	jammy	Does not exist
linux-azure-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	upstream	Released (5.13~rc6)
	focal	Released (5.11.0-1013.14~20.04.1)
	jammy	Does not exist
linux-oracle-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	upstream	Released (5.13~rc6)
	focal	Released (5.11.0-1016.17~20.04.1)
	jammy	Does not exist
linux-ibm Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	impish	Does not exist
	bionic	Does not exist
	focal	Released (5.4.0-1006.7)
	hirsute	Does not exist
	upstream	Released (5.13~rc6)
	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
	focal	Released (5.11.0-1017.19~20.04.1)
	upstream	Released (5.13~rc6)
	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 (5.13~rc6)
	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 (5.13~rc6)
	jammy	Does not exist
linux-azure-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Not vulnerable (5.13.0-1009.10~20.04.2)
	impish	Does not exist
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-hwe-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	impish	Does not exist
	focal	Not vulnerable (5.13.0-21.21~20.04.1)
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-aws-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	impish	Does not exist
	focal	Not vulnerable (5.13.0-1008.9~20.04.2)
	upstream	Released (5.13~rc6)
	jammy	Does not exist
linux-fips Launchpad, Ubuntu, Debian	trusty	Does not exist
	bionic	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.13~rc6)
	xenial	Not vulnerable (4.4.0-1073.79)
	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 (5.13~rc6)
	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 (5.13~rc6)
	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 (5.13~rc6)
	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 (5.13~rc6)
	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

References

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