CVE-2023-1998

Published: 13 April 2023

The Linux kernel allows userspace processes to enable mitigations by calling prctl with PR_SET_SPECULATION_CTRL which disables the speculation feature as well as by using seccomp. We had noticed that on VMs of at least one major cloud provider, the kernel still left the victim process exposed to attacks in some cases even after enabling the spectre-BTI mitigation with prctl. The same behavior can be observed on a bare-metal machine when forcing the mitigation to IBRS on boot command line. This happened because when plain IBRS was enabled (not enhanced IBRS), the kernel had some logic that determined that STIBP was not needed. The IBRS bit implicitly protects against cross-thread branch target injection. However, with legacy IBRS, the IBRS bit was cleared on returning to userspace, due to performance reasons, which disabled the implicit STIBP and left userspace threads vulnerable to cross-thread branch target injection against which STIBP protects.

From the Ubuntu Security Team

Jose Oliveira and Rodrigo Branco discovered that the Spectre Variant 2 mitigations with prctl syscall were insufficient in some situations. A local attacker could possibly use this to expose sensitive information.

Priority

Cvss 3 Severity Score

5.6

Score breakdown

Status

Package	Release	Status
linux-nvidia Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	kinetic	Does not exist
	lunar	Does not exist
	upstream	Needs triage
linux-gkeop-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Not vulnerable
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	upstream	Needs triage
linux Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Released (5.4.0-152.169)
	jammy	Released (5.15.0-75.82)
	kinetic	Released (5.19.0-45.46)
	lunar	Not vulnerable (6.2.0-18.18)
	trusty	Not vulnerable (3.11.0-12.19)
	upstream	Released (6.3~rc1)
	xenial	Not vulnerable (4.4.0-2.16)
	Patches: Introduced by 7c693f54c873691a4b7da05c7e0f74e67745d144 Fixed by 6921ed9049bc7457f66c1596c5b78aec0dae4a9d
linux-aws Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Released (5.4.0-1104.112)
	jammy	Released (5.15.0-1038.43)
	kinetic	Released (5.19.0-1027.28)
	trusty	Not vulnerable (4.4.0-1002.2)
	upstream	Released (6.3~rc1)
	xenial	Not vulnerable (4.4.0-1001.10)
	lunar	Not vulnerable (6.2.0-1003.3)
linux-aws-5.0 Launchpad, Ubuntu, Debian	upstream	Released (6.3~rc1)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-aws-5.3)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-aws-5.15 Launchpad, Ubuntu, Debian	focal	Released (5.15.0-1038.43~20.04.1)
	lunar	Does not exist
	upstream	Released (6.3~rc1)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
linux-aws-5.3 Launchpad, Ubuntu, Debian	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-aws-5.4)
	xenial	Does not exist
	bionic	Ignored (superseded by linux-aws-5.4)
	focal	Does not exist
linux-aws-5.4 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-aws-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (superseded by linux-aws-5.11)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-aws-5.11)
	xenial	Does not exist
linux-aws-hwe Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Ignored (ESM criteria, was needed)
linux-azure Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-azure-5.3)
	focal	Released (5.4.0-1110.116)
	jammy	Released (5.15.0-1040.47)
	kinetic	Released (5.19.0-1028.31)
	lunar	Not vulnerable (6.2.0-1003.3)
	upstream	Released (6.3~rc1)
	trusty	Ignored (ESM criteria, was needed)
	xenial	Ignored (ESM criteria, was needed)
linux-azure-4.15 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-azure-5.11 Launchpad, Ubuntu, Debian	lunar	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-azure-5.13)
	jammy	Does not exist
	kinetic	Does not exist
	upstream	Ignored (superseded by linux-azure-5.13)
linux-azure-5.13 Launchpad, Ubuntu, Debian	lunar	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-azure-5.15)
	jammy	Does not exist
	kinetic	Does not exist
	upstream	Ignored (superseded by linux-azure-5.15)
linux-azure-5.15 Launchpad, Ubuntu, Debian	focal	Released (5.15.0-1040.47~20.04.1)
	lunar	Does not exist
	upstream	Released (6.3~rc1)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
linux-azure-5.19 Launchpad, Ubuntu, Debian	focal	Does not exist
	jammy	Needed
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
	bionic	Does not exist
linux-azure-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-azure-5.4)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-azure-5.4)
	xenial	Does not exist
linux-azure-5.4 Launchpad, Ubuntu, Debian	bionic	Released (5.4.0-1110.116~18.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-azure-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (superseded by linux-azure-5.11)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-azure-5.11)
	xenial	Does not exist
linux-azure-edge Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-azure-5.3)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-azure-fde Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Needed
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
	jammy	Released (5.15.0-1041.48.1)
linux-azure-fde-5.15 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.15.0-1040.47~20.04.1.1)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-azure-fde-5.19 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Needed
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
linux-bluefield Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.4.0-1065.71)
	jammy	Needed
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-dell300x Launchpad, Ubuntu, Debian	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
	bionic	Ignored (end of standard support, was needed)
linux-fips Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Ignored (end of standard support)
	upstream	Released (6.3~rc1)
	xenial	Ignored (end of standard support)
linux-gcp Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-gcp-5.3)
	focal	Released (5.4.0-1107.116)
	jammy	Released (5.15.0-1036.44)
	kinetic	Released (5.19.0-1026.28)
	lunar	Not vulnerable (6.2.0-1005.5)
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Ignored (ESM criteria, was needed)
linux-gcp-4.15 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-gcp-5.11 Launchpad, Ubuntu, Debian	lunar	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-gcp-5.13)
	jammy	Does not exist
	kinetic	Does not exist
	upstream	Ignored (superseded by linux-gcp-5.13)
linux-gcp-5.13 Launchpad, Ubuntu, Debian	lunar	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-gcp-5.15)
	jammy	Does not exist
	kinetic	Does not exist
	upstream	Ignored (superseded by linux-gcp-5.15)
linux-gcp-5.15 Launchpad, Ubuntu, Debian	focal	Released (5.15.0-1036.44~20.04.1)
	lunar	Does not exist
	upstream	Released (6.3~rc1)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
linux-gcp-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-gcp-5.4)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-gcp-5.4)
	xenial	Does not exist
linux-gcp-5.4 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-gcp-5.8 Launchpad, Ubuntu, Debian	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-gcp-5.11)
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-gcp-5.11)
	jammy	Does not exist
linux-gke Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.4.0-1102.109)
	jammy	Released (5.15.0-1036.41)
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Ignored (end of standard support)
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	bionic	Ignored (end of standard support)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-gke-5.15 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.15.0-1036.41~20.04.1)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-gke-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (end of standard support)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-gke-5.4)
	xenial	Does not exist
linux-gke-5.4 Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-gkeop Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.4.0-1071.75)
	jammy	Released (5.15.0-1022.27)
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-gkeop-5.4 Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	bionic	Ignored (replaced by linux-hwe-5.4)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Ignored (ESM criteria, was needed)
linux-hwe-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (superseded by linux-hwe-5.13)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-hwe-5.13)
	xenial	Does not exist
linux-hwe-5.13 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (superseded by linux-hwe-5.15)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-hwe-5.15)
	xenial	Does not exist
linux-hwe-5.15 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.15.0-75.82~20.04.1)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-hwe-5.19 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Released (5.19.0-45.46~22.04.1)
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-hwe-5.4 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-hwe-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (superseded by linux-hwe-5.11)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-hwe-5.11)
	xenial	Does not exist
linux-hwe-edge Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-hwe-5.4)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Ignored (superseded by linux-hwe)
linux-ibm Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.4.0-1051.56)
	jammy	Released (5.15.0-1032.35)
	kinetic	Released (5.19.0-1024.26)
	lunar	Not vulnerable (6.2.0-1001.1)
	trusty	Does not exist
	xenial	Does not exist
	upstream	Released (6.3~rc1)
linux-ibm-5.4 Launchpad, Ubuntu, Debian	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	bionic	Needs triage
	upstream	Released (6.3~rc1)
linux-intel-5.13 Launchpad, Ubuntu, Debian	bionic	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	focal	Ignored (end of life, was needs-triage)
	upstream	Released (6.3~rc1)
linux-intel-iotg Launchpad, Ubuntu, Debian	lunar	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	kinetic	Does not exist
	jammy	Released (5.15.0-1033.38)
	upstream	Released (6.3~rc1)
linux-intel-iotg-5.15 Launchpad, Ubuntu, Debian	lunar	Does not exist
	upstream	Released (6.3~rc1)
	focal	Released (5.15.0-1033.38~20.04.1)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
linux-iot Launchpad, Ubuntu, Debian	bionic	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
	focal	Released (5.4.0-1017.18)
linux-kvm Launchpad, Ubuntu, Debian	focal	Released (5.4.0-1093.99)
	jammy	Released (5.15.0-1035.40)
	kinetic	Released (5.19.0-1025.26)
	lunar	Not vulnerable (6.2.0-1002.2)
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Not vulnerable (4.4.0-1004.9)
	bionic	Needed
linux-lowlatency Launchpad, Ubuntu, Debian	jammy	Released (5.15.0-75.82)
	kinetic	Released (5.19.0-1027.28)
	lunar	Not vulnerable (6.2.0-1002.2)
	upstream	Released (6.3~rc1)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
linux-lowlatency-hwe-5.15 Launchpad, Ubuntu, Debian	focal	Released (5.15.0-75.82~20.04.1)
	lunar	Does not exist
	upstream	Released (6.3~rc1)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
linux-lowlatency-hwe-5.19 Launchpad, Ubuntu, Debian	jammy	Needed
	lunar	Does not exist
	upstream	Released (6.3~rc1)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	kinetic	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Not vulnerable (4.4.0-13.29~14.04.1)
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Ignored (end of standard support)
linux-oem-5.10 Launchpad, Ubuntu, Debian	focal	Ignored (end of life, was needs-triage)
	lunar	Does not exist
	upstream	Released (6.3~rc1)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
linux-oem-5.13 Launchpad, Ubuntu, Debian	lunar	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-oem-5.14)
	jammy	Does not exist
	kinetic	Does not exist
	upstream	Ignored (superseded by linux-oem-5.14)
linux-oem-5.14 Launchpad, Ubuntu, Debian	focal	Not vulnerable (5.14.0-1004.4)
	lunar	Does not exist
	upstream	Released (6.3~rc1)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
linux-oem-5.17 Launchpad, Ubuntu, Debian	jammy	Not vulnerable (5.17.0-1003.3)
	kinetic	Ignored (end of life, was needs-triage)
	lunar	Does not exist
	upstream	Released (6.3~rc1)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
linux-oem-5.6 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (end of life, was needs-triage)
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
linux-oem-6.0 Launchpad, Ubuntu, Debian	focal	Does not exist
	jammy	Ignored (end of life, was needed)
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
	bionic	Does not exist
linux-oem-6.1 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
	jammy	Released (6.1.0-1009.9)
linux-oem-osp1 Launchpad, Ubuntu, Debian	bionic	Ignored (end of standard support, was needs-triage)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-oracle Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Released (5.4.0-1103.112)
	jammy	Released (5.15.0-1037.43)
	kinetic	Released (5.19.0-1025.28)
	lunar	Not vulnerable (6.2.0-1003.3)
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Ignored (ESM criteria, was needed)
linux-oracle-5.0 Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-oracle-5.3)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-oracle-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (superseded by linux-oracle-5.13)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-oracle-5.13)
	xenial	Does not exist
linux-oracle-5.13 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (end of life, was needs-triage)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-oracle-5.15 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.15.0-1037.43~20.04.1)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-oracle-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-oracle-5.4)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-oracle-5.4)
	xenial	Does not exist
linux-oracle-5.4 Launchpad, Ubuntu, Debian	bionic	Needed
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-oracle-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (superseded by linux-oracle-5.11)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-oracle-5.11)
	xenial	Does not exist
linux-raspi Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.4.0-1088.99)
	jammy	Released (5.15.0-1032.35)
	kinetic	Released (5.19.0-1021.28)
	lunar	Not vulnerable (6.2.0-1004.5)
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-raspi-5.4 Launchpad, Ubuntu, Debian	bionic	Needs triage
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	bionic	Ignored (end of standard support, was needed)
	focal	Ignored (replaced by linux-raspi)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Ignored (end of standard support)
linux-raspi2-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (end of standard support)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-raspi2-5.4)
	xenial	Does not exist
linux-riscv Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (superseded by linux-riscv-5.8)
	jammy	Ignored (end of life, was needs-triage)
	kinetic	Released (5.19.0-1020.22)
	lunar	Not vulnerable (6.2.0-19.19.1)
	trusty	Does not exist
	upstream	Released (6.3~rc1)
	xenial	Does not exist
linux-riscv-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (superseded by linux-riscv-5.13)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-riscv-5.13)
	xenial	Does not exist
linux-riscv-5.15 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Released (5.15.0-1035.39~20.04.1)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
linux-riscv-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Ignored (superseded by linux-riscv-5.11)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Ignored (superseded by linux-riscv-5.11)
	xenial	Does not exist
linux-snapdragon Launchpad, Ubuntu, Debian	lunar	Does not exist
	trusty	Does not exist
	xenial	Ignored (end of standard support)
	bionic	Ignored (end of standard support, was needed)
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	upstream	Released (6.3~rc1)
linux-xilinx-zynqmp Launchpad, Ubuntu, Debian	bionic	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
	focal	Released (5.4.0-1024.28)
	jammy	Needed
linux-aws-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	kinetic	Does not exist
	lunar	Does not exist
	upstream	Needs triage
linux-gcp-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	kinetic	Does not exist
	lunar	Does not exist
	upstream	Needs triage
linux-riscv-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	kinetic	Does not exist
	lunar	Does not exist
	upstream	Needs triage
linux-allwinner Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Does not exist
	kinetic	Not vulnerable
	lunar	Not vulnerable
	upstream	Needs triage
linux-allwinner-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	kinetic	Does not exist
	lunar	Does not exist
	upstream	Needs triage
linux-starfive Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Does not exist
	kinetic	Not vulnerable
	lunar	Not vulnerable
	upstream	Needs triage
linux-starfive-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	kinetic	Does not exist
	lunar	Does not exist
	upstream	Needs triage
linux-aws-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	lunar	Does not exist
	upstream	Needs triage
linux-hwe-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	lunar	Does not exist
	upstream	Needs triage
linux-lowlatency-hwe-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	lunar	Does not exist
	upstream	Needs triage
linux-ibm-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Not vulnerable
	jammy	Does not exist
	lunar	Does not exist
	upstream	Needs triage
linux-gcp-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	lunar	Does not exist
	upstream	Needs triage
linux-azure-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	lunar	Does not exist
	upstream	Needs triage
linux-azure-fde-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	lunar	Does not exist
	upstream	Needs triage
linux-aws-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-aws-5.13)
	jammy	Does not exist
	kinetic	Does not exist
	upstream	Ignored (superseded by linux-aws-5.13)
	lunar	Does not exist
linux-aws-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-aws-5.15)
	jammy	Does not exist
	kinetic	Does not exist
	upstream	Ignored (superseded by linux-aws-5.15)
	lunar	Does not exist

Severity score breakdown

Parameter	Value
Base score	5.6
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

References

Bugs

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