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OpenAdvisories
Medium · 6.5 CVE-2023-30456 EUVD-2023-34873GHSA-88gp-69jr-39m4

An issue was discovered in arch/x86/kvm/vmx/nested.c in the Linux kernel before 6.2.8. nVMX on x86_64 lacks consistency checks for CR0 and …

Published Apr 10, 2023 · Updated Mar 19, 2025 · Assigned by mitre

Package: kernel Package: linux Package: linux Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 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-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.4 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lts-xenial Package: linux-nvidia Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 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-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.8 Package: linux-snapdragon Package: linux-vmware Package: linux-xilinx-zynqmp Ecosystem: Azure Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

An issue was discovered in arch/x86/kvm/vmx/nested.c in the Linux kernel before 6.2.8. nVMX on x86_64 lacks consistency checks for CR0 and CR4.

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.

ReleasePackageFixed inAdvisory
Debian 14 linux 6.1.25-1 —
Debian 13 linux 6.1.25-1 —
Debian 12 linux 6.1.25-1 —
Debian 10 linux 4.19.282-1 DLA-3403-1
Debian 10 linux-5.10 5.10.178-3~deb10u1 DLA-3404-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1017.19 —
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux +1 5.15.0-73.80 USN-6127-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1037.41 USN-6127-1
Ubuntu 22.04 LTS linux-azure 5.15.0-1039.46 USN-6127-1
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1039.46.1 USN-6135-1
Ubuntu 22.04 LTS linux-gcp 5.15.0-1035.43 USN-6127-1
Ubuntu 22.04 LTS linux-gke +1 5.15.0-1034.39 USN-6127-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1021.26 USN-6127-1
Ubuntu 22.04 LTS linux-hwe-5.19 5.19.0-43.44~22.04.1 USN-6127-1
Ubuntu 22.04 LTS linux-ibm 5.15.0-1031.34 USN-6127-1
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1031.36 USN-6150-1
Ubuntu 22.04 LTS linux-lowlatency-hwe-5.19 5.19.0-1025.26~22.04.1 —
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1026.26 —
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1014.14 —
Ubuntu 22.04 LTS linux-oem-5.17 5.17.0-1032.33 USN-6124-1
Ubuntu 22.04 LTS linux-oem-6.0 6.0.0-1017.17 USN-6123-1
Ubuntu 22.04 LTS linux-oem-6.1 6.1.0-1009.9 USN-6033-1
Ubuntu 22.04 LTS linux-oracle 5.15.0-1036.42 USN-6127-1
Ubuntu 22.04 LTS linux-raspi 5.15.0-1030.32 USN-6150-1
Ubuntu 22.04 LTS linux-riscv +2 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-150.167 USN-6131-1
Ubuntu 20.04 LTS linux-aws 5.4.0-1103.111 USN-6131-1
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1037.41~20.04.1 USN-6127-1
Ubuntu 20.04 LTS linux-azure 5.4.0-1109.115 USN-6131-1
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1039.46~20.04.1 USN-6127-1
Ubuntu 20.04 LTS linux-azure-fde-5.15 5.15.0-1039.46~20.04.1.1 USN-6135-1
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1064.70 USN-6132-1
Ubuntu 20.04 LTS linux-gcp 5.4.0-1106.115 USN-6131-1
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1035.43~20.04.1 USN-6127-1
Ubuntu 20.04 LTS linux-gke 5.4.0-1100.107 USN-6131-1
Ubuntu 20.04 LTS linux-gke-5.15 5.15.0-1034.39~20.04.1 USN-6127-1
Ubuntu 20.04 LTS linux-gkeop 5.4.0-1070.74 USN-6131-1
Ubuntu 20.04 LTS linux-gkeop-5.15 5.15.0-1021.26~20.04.1 —
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-73.80~20.04.1 USN-6127-1
Ubuntu 20.04 LTS linux-ibm 5.4.0-1050.55 USN-6131-1
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1031.36~20.04.1 USN-6162-1
Ubuntu 20.04 LTS linux-iot 5.4.0-1017.18 USN-6256-1
Ubuntu 20.04 LTS linux-kvm 5.4.0-1092.98 USN-6131-1
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1014.14~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1102.111 USN-6131-1
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1036.42~20.04.1 USN-6127-1
Ubuntu 20.04 LTS linux-raspi 5.4.0-1086.97 USN-6150-1
Ubuntu 20.04 LTS linux-riscv +24 No fix yet —
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1034.38~20.04.1 —
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1024.28 USN-6222-1
Ubuntu 18.04 LTS linux 4.15.0-212.223 USN-6130-1
Ubuntu 18.04 LTS linux-aws 4.15.0-1157.170 USN-6130-1
Ubuntu 18.04 LTS linux-aws-5.4 5.4.0-1103.111~18.04.1 USN-6132-1
Ubuntu 18.04 LTS linux-azure-4.15 4.15.0-1166.181 USN-6130-1
Ubuntu 18.04 LTS linux-azure-5.4 5.4.0-1109.115~18.04.1 USN-6131-1
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 18.04 LTS linux-gcp-4.15 4.15.0-1151.167 USN-6130-1
Ubuntu 18.04 LTS linux-gcp-5.4 5.4.0-1106.115~18.04.1 USN-6131-1
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-150.167~18.04.1 USN-6131-1
Ubuntu 18.04 LTS linux-ibm-5.4 5.4.0-1050.55~18.04.1 USN-6131-1
Ubuntu 18.04 LTS linux-kvm 4.15.0-1141.146 USN-6130-1
Ubuntu 18.04 LTS linux-oracle 4.15.0-1120.131 USN-6130-1
Ubuntu 18.04 LTS linux-oracle-5.4 5.4.0-1102.111~18.04.1 USN-6131-1
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1086.97~18.04.1 —
Ubuntu 18.04 LTS linux-snapdragon 4.15.0-1151.161 USN-6130-1
Show 13 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1028.33 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1039.42 —
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1103.111+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1109.115+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1078.87 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1106.115+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2096.102 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2075.81 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1112.123 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2059.64 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips 4.4.0-1089.96 —
Ubuntu Pro 22.04 LTS linux 5.15.0-78.85 LSN-0096-1
Ubuntu Pro 22.04 LTS linux-azure 5.15.0-1042.49 LSN-0096-1
Ubuntu Pro 22.04 LTS linux-gcp 5.15.0-1038.46 LSN-0096-1
Ubuntu Pro 22.04 LTS linux-gke 5.15.0-1038.43 LSN-0096-1
Ubuntu Pro 22.04 LTS linux-ibm 5.15.0-1034.37 LSN-0096-1
Ubuntu Pro 20.04 LTS linux 5.4.0-155.172 LSN-0096-1
Ubuntu Pro 20.04 LTS linux-aws 5.4.0-1106.114 LSN-0096-1
Ubuntu Pro 20.04 LTS linux-azure 5.4.0-1112.118 LSN-0096-1
Ubuntu Pro 20.04 LTS linux-gcp 5.4.0-1109.118 LSN-0096-1
Ubuntu Pro 20.04 LTS linux-gcp-5.15 5.15.0-1038.46~20.04.1 LSN-0096-1
Ubuntu Pro 20.04 LTS linux-gke 5.4.0-1104.111 LSN-0096-1
Ubuntu Pro 20.04 LTS linux-gke-5.15 5.15.0-1038.43~20.04.1 LSN-0096-1
Ubuntu Pro 20.04 LTS linux-gkeop 5.4.0-1073.77 LSN-0096-1
Ubuntu Pro 20.04 LTS linux-hwe-5.15 +1 5.15.0-78.85~20.04.1 LSN-0096-1
Ubuntu Pro 20.04 LTS linux-ibm 5.4.0-1053.58 LSN-0096-1
Ubuntu Pro 18.04 LTS linux 4.15.0-214.225 LSN-0096-1
Ubuntu Pro 18.04 LTS linux-azure-5.4 5.4.0-1112.118~18.04.1 LSN-0096-1
Ubuntu Pro 18.04 LTS linux-gcp-4.15 4.15.0-1153.170 LSN-0096-1
Ubuntu Pro 18.04 LTS linux-gcp-5.4 5.4.0-1109.118~18.04.1 LSN-0096-1
Ubuntu Pro 18.04 LTS linux-gke-5.4 +1 No fix yet LSN-0096-1
Ubuntu Pro 18.04 LTS linux-hwe-5.4 5.4.0-155.172~18.04.1 LSN-0096-1
Ubuntu Pro 18.04 LTS linux-ibm-5.4 5.4.0-1053.58~18.04.1 LSN-0096-1
Ubuntu Pro 16.04 LTS linux 4.4.0-241.275 USN-6149-1, LSN-0096-1
Ubuntu Pro 16.04 LTS linux-aws 4.4.0-1157.172 USN-6149-1, LSN-0096-1
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1157.170~16.04.1 USN-6130-1, LSN-0096-1
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1166.181~16.04.1 USN-6130-1, LSN-0096-1
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1151.167~16.04.1 USN-6130-1, LSN-0096-1
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-212.223~16.04.1 USN-6130-1, LSN-0096-1
Ubuntu Pro 16.04 LTS linux-kvm 4.4.0-1120.130 USN-6149-1
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1120.131~16.04.1 USN-6130-1
Ubuntu Pro 14.04 LTS linux 3.13.0-197.248 USN-6699-1
Ubuntu Pro 14.04 LTS linux-aws 4.4.0-1119.125 USN-6149-1
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1166.181~14.04.1 USN-6130-1
Ubuntu Pro 14.04 LTS linux-lts-xenial 4.4.0-241.275~14.04.1 USN-6149-1, LSN-0096-1
ReleasePackageFixed inAdvisory
RHEL 9 bpftool 7.2.0-362.8.1.el9_3 RHSA-2023:6583
RHEL 9 rv +64 5.14.0-362.8.1.el9_3 RHSA-2023:6583
RHEL 8 kernel-rt +12 4.18.0-513.5.1.rt7.307.el8_9 RHSA-2023:6901
RHEL 8 perf +26 4.18.0-513.5.1.el8_9 RHSA-2023:7077
Show 3 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Red Hat Rhev Hypervisor 4 perf +2 4.18.0-372.93.1.el8_6 RHSA-2024:0930
RHEL 8.8 EUS perf +26 4.18.0-477.51.1.el8_8 RHSA-2024:1404
RHEL 8.6 EUS perf +26 4.18.0-372.93.1.el8_6 RHSA-2024:0930

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 8 perf +24 4.18.0-513.5.1.el8_9 ALSA-2023:7077
ReleasePackageFixed inAdvisory
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.7.1 SUSE-SU-2023:2871-1
SLES 15 SP5 kernel-azure +2 5.14.21-150500.33.3.1 SUSE-SU-2023:2646-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.7.1.150500.6.2.5 SUSE-SU-2023:2871-1
SLES 15 SP4 kernel-64kb +5 5.14.21-150400.24.66.1 SUSE-SU-2023:2653-1
SLES 15 SP4 kernel-azure +2 5.14.21-150400.14.52.1 SUSE-SU-2023:2500-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.66.1.150400.24.29.1 SUSE-SU-2023:2653-1
SLES 15 SP4 kernel-docs 5.14.21-150400.24.66.2 SUSE-SU-2023:2653-1
Show 6 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLE Micro 5.4 kernel-default 5.14.21-150400.24.66.1 SUSE-SU-2023:2653-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.66.1.150400.24.29.1 SUSE-SU-2023:2653-1
SLE Micro 5.4 kernel-rt 5.14.21-150400.15.37.2 SUSE-SU-2023:2782-1
SLE Micro 5.3 kernel-default 5.14.21-150400.24.66.1 SUSE-SU-2023:2653-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.66.1.150400.24.29.1 SUSE-SU-2023:2653-1
SLE Micro 5.3 kernel-rt 5.14.21-150400.15.37.2 SUSE-SU-2023:2782-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.7.1 SUSE-SU-2023:2871-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5-RT_Update_1 1-150500.11.5.1 SUSE-SU-2023:2809-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_1 1-150500.11.7.1 SUSE-SU-2023:2871-1
SLE Live Patching 15 SP4 kernel-default 5.14.21-150400.24.66.1 SUSE-SU-2023:2653-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4-RT_Update_8 1-150400.1.9.2 SUSE-SU-2023:2782-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4_Update_13 1-150400.9.3.1 SUSE-SU-2023:2653-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.5.1 SUSE-SU-2023:2809-1
SUSE Real Time Module 15 SP4 kernel-rt +1 5.14.21-150400.15.37.2 SUSE-SU-2023:2782-1
SUSE Real Time Module 15 SP4 kernel-syms-rt +1 5.14.21-150400.15.37.1 SUSE-SU-2023:2782-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.5 dtb-aarch64 +10 5.14.21-150500.55.7.1 SUSE-SU-2023:2871-1
openSUSE Leap 15.5 kernel-azure +2 5.14.21-150500.33.3.1 SUSE-SU-2023:2646-1
openSUSE Leap 15.5 kernel-default-base 5.14.21-150500.55.7.1.150500.6.2.5 SUSE-SU-2023:2871-1
openSUSE Leap 15.5 kernel-rt +3 5.14.21-150500.13.5.1 SUSE-SU-2023:2809-1
openSUSE Leap 15.4 dtb-aarch64 +9 5.14.21-150400.24.66.1 SUSE-SU-2023:2653-1
openSUSE Leap 15.4 kernel-azure +2 5.14.21-150400.14.52.1 SUSE-SU-2023:2500-1
openSUSE Leap 15.4 kernel-default-base 5.14.21-150400.24.66.1.150400.24.29.1 SUSE-SU-2023:2653-1
openSUSE Leap 15.4 kernel-docs 5.14.21-150400.24.66.2 SUSE-SU-2023:2653-1
openSUSE Leap 15.4 kernel-rt +1 5.14.21-150400.15.37.2 SUSE-SU-2023:2782-1
openSUSE Leap 15.4 kernel-syms-rt +1 5.14.21-150400.15.37.1 SUSE-SU-2023:2782-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
openSUSE Leap Micro 5.3 kernel-default 5.14.21-150400.24.66.1 SUSE-SU-2023:2653-1
openSUSE Leap Micro 5.3 kernel-default-base 5.14.21-150400.24.66.1.150400.24.29.1 SUSE-SU-2023:2653-1
openSUSE Leap Micro 5.3 kernel-rt 5.14.21-150400.15.37.2 SUSE-SU-2023:2782-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 kernel-livepatch-6.1.21-1.45 1.0-0.amzn2023 ALAS2023-2023-148
Amazon Linux 2023 perf +12 6.1.21-1.45.amzn2023 ALAS2023-2023-148
Amazon Linux 2 kernel-livepatch-4.14.348-265.562 1.0-0.amzn2 ALAS2-2024-2581
Amazon Linux 2 perf +8 4.14.348-265.562.amzn2 ALAS2-2024-2581

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 2 (CBL-Mariner) kernel 5.15.107.1-2 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 bpftool 7.2.0-362.8.1.el9_3 ELSA-2023-6583
Oracle Linux 9 rv +25 5.14.0-362.8.1.el9_3 ELSA-2023-6583
Oracle Linux 8 kernel-uek +10 5.15.0-101.103.2.1.el9uek ELSA-2023-12339
Oracle Linux 8 kernel-uek-container +1 5.4.17-2136.320.7.el8 ELSA-2023-12413, ELSA-2023-12339
Oracle Linux 8 perf +19 4.18.0-513.5.1.el8_9 ELSA-2023-12339, ELSA-2023-7077
Oracle Linux 7 kernel-uek +4 5.4.17-2136.320.7.el8uek ELSA-2023-12394
Oracle Linux 7 kernel-uek-container +1 5.4.17-2136.320.7.el7 ELSA-2023-12412
Oracle Linux 7 perf +3 5.4.17-2136.320.7.el7uek ELSA-2023-12394

Advisories 41

References