High · 7.8 CVE-2026-43212 EUVD-2026-27772GHSA-c859-65q3-j346

LoongArch: Make cpumask_of_node() robust against NUMA_NO_NODE

Published May 6, 2026 · Updated Aug 5, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.8 Package: linux-aws-6.14 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-fips Package: linux-azure Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.8 Package: linux-azure-6.11 Package: linux-azure-6.14 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-6.8 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.14 Package: linux-azure-fde-6.2 Package: linux-azure-fde-6.8 Package: linux-azure-fips Package: linux-azure-nvidia Package: linux-azure-nvidia-6.14 Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.14 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-6.8 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.19 Package: linux-hwe-5.8 Package: linux-hwe-6.11 Package: linux-hwe-6.14 Package: linux-hwe-6.17 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-6.8 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-6.8 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-lowlatency Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.11 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lowlatency-hwe-6.8 Package: linux-nvidia Package: linux-nvidia-6.11 Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-6.8 Package: linux-nvidia-lowlatency Package: linux-nvidia-tegra Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.11 Package: linux-oem-6.14 Package: linux-oem-6.17 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.3 Package: linux-oracle-5.8 Package: linux-oracle-6.14 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.14 Package: linux-realtime-6.8 Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.14 Package: linux-riscv-6.5 Package: linux-riscv-6.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

LoongArch: Make cpumask_of_node() robust against NUMA_NO_NODE

The arch definition of cpumask_of_node() cannot handle NUMA_NO_NODE -
which is a valid index - so add a check for this.

Affected products

Vendor	Product	Affected	Fixed
Linux	Linux	5.19	6.1.165

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗

Release	Package	Fixed in	Advisory
Debian 14	linux	6.19.6-1	—
Debian 13	linux	6.12.85-1	—
Debian 12	linux	6.1.170-1	—

Ubuntu

Security tracker ↗

Release	Package	Fixed in	Advisory
Ubuntu Nvidia-BlueField 24.04 LTS	linux-bluefield	6.8.0-1026.30	—
Ubuntu 24.04 LTS	linux	6.8.0-134.134	USN-8492-1
Ubuntu 24.04 LTS	linux-aws	6.8.0-1060.63	USN-8492-1
Ubuntu 24.04 LTS	linux-azure	6.8.0-1063.71	USN-8606-1
Ubuntu 24.04 LTS	linux-azure-fde	6.8.0-1062.69	—
Ubuntu 24.04 LTS	linux-azure-nvidia	6.8.0-1039.42	—
Ubuntu 24.04 LTS	linux-gcp	6.8.0-1063.69	USN-8492-1
Ubuntu 24.04 LTS	linux-gke	6.8.0-1058.64	USN-8492-2
Ubuntu 24.04 LTS	linux-gkeop	6.8.0-1045.48	USN-8492-2
Ubuntu 24.04 LTS	linux-ibm	6.8.0-1060.61	USN-8492-1
Ubuntu 24.04 LTS	linux-lowlatency	6.8.0-134.134.1	USN-8497-1
Ubuntu 24.04 LTS	linux-nvidia	6.8.0-1058.61	USN-8492-1
Ubuntu 24.04 LTS	linux-nvidia-lowlatency	6.8.0-1058.61.1	USN-8492-2
Ubuntu 24.04 LTS	linux-nvidia-tegra	6.8.0-1029.30	USN-8498-1
Ubuntu 24.04 LTS	linux-oracle	6.8.0-1057.58	USN-8492-1
Ubuntu 24.04 LTS	linux-raspi	6.8.0-1060.64	USN-8492-4
Ubuntu 24.04 LTS	linux-riscv +20	No fix yet	—
Ubuntu 24.04 LTS	linux-xilinx	6.8.0-1032.33	USN-8499-1
Ubuntu 22.04 LTS	linux-aws-6.8	6.8.0-1060.63~22.04.1	USN-8492-2
Ubuntu 22.04 LTS	linux-azure-6.8	6.8.0-1063.71~22.04.1	USN-8606-1
Ubuntu 22.04 LTS	linux-azure-fde-6.8	6.8.0-1062.69~22.04.1	—
Ubuntu 22.04 LTS	linux-gcp-6.8	6.8.0-1063.69~22.04.1	USN-8492-2
Ubuntu 22.04 LTS	linux-hwe-6.8	6.8.0-136.136~22.04.1	USN-8619-1
Ubuntu 22.04 LTS	linux-ibm-6.8	6.8.0-1060.61~22.04.1	USN-8492-2
Ubuntu 22.04 LTS	linux-lowlatency-hwe-6.8	6.8.0-134.134.1~22.04.1	USN-8497-1
Ubuntu 22.04 LTS	linux-nvidia-6.8	6.8.0-1058.61~22.04.1	USN-8492-1
Ubuntu 22.04 LTS	linux-oracle-6.8	6.8.0-1057.58~22.04.1	USN-8492-2
Ubuntu 22.04 LTS	linux-riscv +32	No fix yet	—
Ubuntu 22.04 LTS	linux-riscv-6.8	6.8.0-134.134~22.04.1	—
Ubuntu 20.04 LTS	linux-gke +28	No fix yet	—
Ubuntu 18.04 LTS	linux-gcp +14	No fix yet	—

Show 4 more (older releases, extended support, other products)

Release	Package	Fixed in	Advisory
Ubuntu 16.04 LTS	linux-hwe-edge	No fix yet	—
Ubuntu Pro Realtime 24.04 LTS	linux-raspi-realtime	6.8.0-2049.50	USN-8492-3
Ubuntu Pro Realtime 24.04 LTS	linux-realtime	6.8.1-1055.56	USN-8492-1
Ubuntu Pro Realtime 24.04 LTS	linux-realtime-6.14	No fix yet	—
Ubuntu Pro Realtime 22.04 LTS	linux-realtime-6.8	6.8.1-1055.56~22.04.1	USN-8492-1
Ubuntu Pro FIPS-updates 24.04 LTS	linux-aws-fips	6.8.0-1060.63+fips1	USN-8492-1
Ubuntu Pro FIPS-updates 24.04 LTS	linux-azure-fips	6.8.0-1062.69+fips1	USN-8492-5
Ubuntu Pro FIPS-updates 24.04 LTS	linux-fips	6.8.0-134.134+fips1	USN-8492-5
Ubuntu Pro FIPS-updates 24.04 LTS	linux-gcp-fips	6.8.0-1063.69+fips1	USN-8492-1

Advisories 11

USN-8619-1 linux-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 13, 2026
USN-8606-1 linux-azure, linux-azure-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 13, 2026
WID-SEC-2026-1405 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
USN-8499-1 linux-xilinx vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
USN-8497-1 linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
USN-8492-1 linux, linux-aws, linux-aws-fips, linux-gcp, linux-gcp-fips, linux-ibm, linux-nvidia, linux-nvidia-6.8, linux-oracle, linux-realtime, linux-realtime-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8492-2 linux-aws-6.8, linux-gcp-6.8, linux-gke, linux-gkeop, linux-ibm-6.8, linux-nvidia-lowlatency, linux-oracle-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8498-1 linux-nvidia-tegra vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8492-3 linux-raspi-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8492-5 linux-azure-fips, linux-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8492-4 linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026

References