CVE-2023-4623

Published: 6 September 2023

A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation. If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free. We recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.

From the Ubuntu Security Team

Budimir Markovic discovered that the qdisc implementation in the Linux kernel did not properly validate inner classes, leading to a use-after-free vulnerability. A local user could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Notes

Author	Note
	Priority reason: allows local privilege escalation
sbeattie	might require CAP_NET_ADMIN in the init namespace to set up sch_hfsc scheduler

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
linux-hwe Launchpad, Ubuntu, Debian	trusty	Does not exist
	bionic	Ignored (replaced by linux-hwe-5.4)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	xenial	Released (4.15.0-219.230~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	mantic	Does not exist
linux-hwe-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	bionic	Released (5.4.0-165.182~18.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
linux-hwe-5.8 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-hwe-5.11)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-hwe-5.11)
	mantic	Does not exist
linux-hwe-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-hwe-5.13)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-hwe-5.13)
	mantic	Does not exist
linux-hwe-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-hwe-5.15)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-hwe-5.15)
	mantic	Does not exist
linux-hwe-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	focal	Released (5.15.0-87.97~20.04.1)
linux-hwe-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	jammy	Ignored (end of life, was needs-triage)
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-hwe-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	jammy	Released (6.2.0-35.35~22.04.1)
linux-hwe-edge Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Ignored (superseded by linux-hwe)
	bionic	Ignored (superseded by linux-hwe-5.4)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (end of life)
	mantic	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	trusty	Released (4.4.0-246.280~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-kvm Launchpad, Ubuntu, Debian	trusty	Does not exist
	bionic	Released (4.15.0-1146.151) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (6.6~rc1)
	xenial	Released (4.4.0-1125.135) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	mantic	Does not exist
	focal	Released (5.4.0-1101.107)
	jammy	Released (5.15.0-1045.50)
	lunar	Released (6.2.0-1015.15)
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
	lunar	Ignored (end of life)
	upstream	Ignored (end of life)
	mantic	Does not exist
linux-allwinner-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	jammy	Ignored (end of life, was needs-triage)
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-aws-5.0 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-hwe-5.3)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-hwe-5.3)
	mantic	Does not exist
linux-aws-5.3 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-aws-5.4)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-aws-5.4)
	mantic	Does not exist
linux-aws-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	bionic	Released (5.4.0-1112.121~18.04.2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-aws-5.8 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-aws-5.11)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-aws-5.11)
	mantic	Does not exist
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
	lunar	Does not exist
	upstream	Ignored (superseded by linux-aws-5.13)
	mantic	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
	lunar	Does not exist
	upstream	Ignored (superseded by linux-aws-5.15)
	mantic	Does not exist
linux-aws-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	focal	Released (5.15.0-1048.53~20.04.1)
linux-aws-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Ignored (superseded by linux-aws-6.2)
	lunar	Does not exist
	upstream	Ignored (superseded by linux-aws-6.2)
	mantic	Does not exist
linux-aws-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	jammy	Released (6.2.0-1014.14~22.04.1)
linux-aws-hwe Launchpad, Ubuntu, Debian	trusty	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	xenial	Released (4.15.0-1162.175~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	mantic	Does not exist
linux-azure Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-azure-5.3)
	trusty	Released (4.15.0-1171.186~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (6.6~rc1)
	xenial	Released (4.15.0-1171.186~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	mantic	Not vulnerable (6.5.0-1006.6)
	focal	Released (5.4.0-1118.125)
	jammy	Released (5.15.0-1050.57)
	lunar	Released (6.2.0-1015.15)
linux-azure-4.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	bionic	Released (4.15.0-1171.186) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-azure-5.3 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-azure-5.4)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-azure-5.4)
	mantic	Does not exist
linux-azure-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	bionic	Released (5.4.0-1118.125~18.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
linux-azure-5.8 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-azure-5.11)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-azure-5.11)
	mantic	Does not exist
linux-azure-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-azure-5.13)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-azure-5.13)
	mantic	Does not exist
linux-azure-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-azure-5.15)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-azure-5.15)
	mantic	Does not exist
linux-azure-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	focal	Released (5.15.0-1050.57~20.04.1)
linux-azure-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	jammy	Ignored (end of life, was needs-triage)
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-azure-fde Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-azure-fde-5.15)
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	jammy	Released (5.15.0-1050.57)
linux-azure-fde-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	focal	Released (5.15.0-1050.57~20.04.1)
linux-azure-fde-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	jammy	Ignored (end of life, was needs-triage)
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-bluefield Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	jammy	Pending
	focal	Released (5.4.0-1073.79)
linux-dell300x Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (end of standard support)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (end of life)
	mantic	Does not exist
linux-azure-edge Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-azure-5.3)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-azure-5.3)
	mantic	Does not exist
linux-fips Launchpad, Ubuntu, Debian	trusty	Ignored (end of standard support)
	xenial	Ignored (end of standard support)
	bionic	Does not exist
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	trusty	Does not exist
	bionic	Ignored (superseded by linux-gcp-5.3)
	upstream	Released (6.6~rc1)
	xenial	Released (4.15.0-1156.173~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	mantic	Not vulnerable (6.5.0-1006.6)
	focal	Released (5.4.0-1116.125)
	jammy	Released (5.15.0-1045.53)
	lunar	Released (6.2.0-1017.19)
linux-gcp-4.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	bionic	Released (4.15.0-1156.173) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-gcp-5.3 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-gcp-5.4)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-gcp-5.4)
	mantic	Does not exist
linux-gcp-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	bionic	Released (5.4.0-1116.125~18.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-gcp-5.8 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-gcp-5.11)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-gcp-5.11)
	mantic	Does not exist
linux-gcp-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-gcp-5.13)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-gcp-5.13)
	mantic	Does not exist
linux-gcp-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-gcp-5.15)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-gcp-5.15)
	mantic	Does not exist
linux-gcp-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	focal	Released (5.15.0-1045.53~20.04.2)
linux-gcp-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Ignored (superseded by linux-gcp-6.2)
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-gcp-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	jammy	Released (6.2.0-1017.19~22.04.1)
linux-gke Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Ignored (end of standard support)
	bionic	Does not exist
	focal	Ignored (end of life)
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	jammy	Released (5.15.0-1045.50)
linux-gke-4.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-gke-5.0)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-gke-5.0)
	mantic	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-gke-5.3)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-gke-5.3)
	mantic	Does not exist
linux-gke-5.3 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-gke-5.4)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-gke-5.4)
	mantic	Does not exist
linux-gke-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (end of life)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (end of life)
	mantic	Does not exist
linux-gke-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (end of life)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (end of life)
	mantic	Does not exist
linux-gkeop Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	focal	Released (5.4.0-1079.83)
	jammy	Released (5.15.0-1031.37)
linux-gkeop-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (end of life)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (end of life)
	mantic	Does not exist
linux-gkeop-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	focal	Released (5.15.0-1031.37~20.04.1)
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-ibm Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	upstream	Released (6.6~rc1)
	lunar	Ignored (end of life, was needed)
	mantic	Ignored (end of life, was pending [6.5.0-1006.6])
	focal	Released (5.4.0-1059.64)
	jammy	Released (5.15.0-1041.44)
linux-ibm-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	bionic	Released (5.4.0-1059.64~18.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
linux-ibm-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	focal	Released (5.15.0-1041.44~20.04.1)
linux-intel-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (end of life)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (end of life)
	mantic	Does not exist
linux-intel-iotg Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	jammy	Released (5.15.0-1043.49)
linux-intel-iotg-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	focal	Released (5.15.0-1043.49~20.04.1)
linux-iot Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	focal	Released (5.4.0-1024.25)
linux-lowlatency Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Not vulnerable (6.5.0-8.8.1)
	jammy	Released (5.15.0-87.96)
	lunar	Released (6.2.0-1015.15)
linux-lowlatency-hwe-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	focal	Released (5.15.0-87.96~20.04.1)
linux-lowlatency-hwe-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	jammy	Ignored (end of life, was needs-triage)
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-lowlatency-hwe-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	jammy	Released (6.2.0-1015.15~22.04.1)
linux-nvidia Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	jammy	Released (5.15.0-1039.39)
linux-oracle Launchpad, Ubuntu, Debian	trusty	Does not exist
	bionic	Pending (4.15.0-1125.136)
	upstream	Released (6.6~rc1)
	xenial	Released (4.15.0-1125.136~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	mantic	Not vulnerable (6.5.0-1009.9)
	focal	Released (5.4.0-1111.120)
	jammy	Released (5.15.0-1046.52)
	lunar	Released (6.2.0-1014.14)
linux-oracle-5.0 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-oracle-5.3)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-oracle-5.3)
	mantic	Does not exist
linux-oracle-5.3 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-oracle-5.4)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-oracle-5.4)
	mantic	Does not exist
linux-oracle-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	bionic	Released (5.4.0-1111.120~18.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
linux-oracle-5.8 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-oracle-5.11)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-oracle-5.11)
	mantic	Does not exist
linux-oracle-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-oracle-5.13)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-oracle-5.13)
	mantic	Does not exist
linux-oracle-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-oracle-5.15)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-oracle-5.15)
	mantic	Does not exist
linux-oracle-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	focal	Released (5.15.0-1046.52~20.04.1)
	upstream	Released (6.6~rc1)
	mantic	Does not exist
linux-oem Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Ignored (end of standard support)
	bionic	Ignored (end of life)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (end of life)
	mantic	Does not exist
linux-oem-5.6 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-oem-5.10)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-oem-5.10)
	mantic	Does not exist
linux-oem-5.10 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-oem-5.13)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-oem-5.13)
	mantic	Does not exist
linux-oem-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-oem-5.14)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-oem-5.14)
	mantic	Does not exist
linux-oem-5.14 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (end of life)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (end of life)
	mantic	Does not exist
linux-oem-5.17 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	jammy	Ignored (end of life, was needed)
	mantic	Does not exist
linux-oem-6.0 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	jammy	Ignored (end of life, was needed)
	mantic	Does not exist
linux-oem-6.1 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	jammy	Released (6.1.0-1023.23)
	mantic	Does not exist
linux-oem-osp1 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (end of standard support)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (end of life)
	mantic	Does not exist
linux-raspi Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Not vulnerable (6.5.0-1003.4)
	focal	Released (5.4.0-1096.107)
	jammy	Released (5.15.0-1041.44)
	lunar	Released (6.2.0-1015.17)
linux-raspi2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Ignored (end of standard support)
	bionic	Ignored (end of standard support)
	focal	Ignored (replaced by linux-raspi)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (end of life)
	mantic	Does not exist
linux-raspi2-5.3 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (end of standard support)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-raspi2-5.4)
	mantic	Does not exist
linux-raspi-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	bionic	Released (5.4.0-1096.107~18.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
linux-riscv Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-riscv-5.8)
	jammy	Ignored (end of life)
	upstream	Released (6.6~rc1)
	lunar	Released (6.2.0-35.35.1)
	mantic	Not vulnerable (6.5.0-9.9.1)
linux-riscv-5.8 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-riscv-5.11)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-riscv-5.11)
	mantic	Does not exist
linux-riscv-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-riscv-5.13)
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (superseded by linux-riscv-5.13)
	mantic	Does not exist
linux-riscv-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	focal	Released (5.15.0-1044.48~20.04.1)
linux-riscv-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Ignored (end of life)
	lunar	Does not exist
	upstream	Ignored (end of life)
	mantic	Does not exist
linux-snapdragon Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Ignored (end of standard support)
	bionic	Ignored (end of standard support)
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	upstream	Ignored (end of life)
	mantic	Does not exist
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
	upstream	Released (6.6~rc1)
	mantic	Not vulnerable (6.5.0-1002.3)
	lunar	Released (6.2.0-1007.8)
linux-starfive-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Ignored (end of life)
	lunar	Does not exist
	upstream	Ignored (end of life)
	mantic	Does not exist
linux-xilinx-zynqmp Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	focal	Released (5.4.0-1032.36)
	jammy	Released (5.15.0-1025.29)
linux-azure-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	jammy	Released (6.2.0-1015.15~22.04.1)
linux-azure-fde-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	upstream	Released (6.6~rc1)
	mantic	Does not exist
	jammy	Released (6.2.0-1015.15~22.04.1)
linux Launchpad, Ubuntu, Debian	upstream	Released (6.6~rc1)
	mantic	Not vulnerable (6.5.0-7.7)
	trusty	Released (3.13.0-194.245) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	bionic	Released (4.15.0-219.230) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	focal	Released (5.4.0-165.182)
	jammy	Released (5.15.0-87.97)
	lunar	Released (6.2.0-35.35)
	xenial	Released (4.4.0-246.280) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by b3d26c5702c7d6c45456326e56d2ccf3f103e60f
linux-aws Launchpad, Ubuntu, Debian	trusty	Released (4.4.0-1124.130) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (6.6~rc1)
	xenial	Released (4.4.0-1162.177) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	mantic	Not vulnerable (6.5.0-1007.7)
	bionic	Released (4.15.0-1162.175) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	focal	Released (5.4.0-1112.121)
	jammy	Released (5.15.0-1048.53)
	lunar	Released (6.2.0-1014.14)
linux-nvidia-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	jammy	Released (6.2.0-1011.11)
	upstream	Released (6.6~rc1)
linux-starfive-6.2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	jammy	Released (6.2.0-1007.8~22.04.1)
	upstream	Released (6.6~rc1)
linux-laptop Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	mantic	Not vulnerable (6.5.0-1003.6)
	upstream	Released (6.6~rc1)
linux-oem-6.5 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Pending (6.5.0-1004.4)
	lunar	Does not exist
	mantic	Does not exist
	upstream	Released (6.6~rc1)

Severity score breakdown

Parameter	Value
Base score	7.8
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Bugs

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