8.8
CWE
1188
Advisory Published
Updated

CVE-2022-2196

First published: Wed Sep 28 2022(Updated: )

A flaw was found in the KVM's Intel nested virtualization feature (nVMX). Since L1 and L2 shared branch prediction modes (guest-user and guest-kernel), KVM did not protect indirect branches in L1 from steering by a malicious agent in L2. This could allow a malicious nested guest to carry out Spectre v2 attacks against L1 due to a missing IBPB at VM-exit time.

Credit: cve-coordination@google.com cve-coordination@google.com cve-coordination@google.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel>=5.4.47<5.4.233
Linux Linux kernel>=5.6.19<5.7
Linux Linux kernel>=5.7.3<5.10.170
Linux Linux kernel>=5.11<5.15.96
Linux Linux kernel>=5.16<6.1.14
Debian Debian Linux=10.0
redhat/kernel-rt<0:4.18.0-477.10.1.rt7.274.el8_8
0:4.18.0-477.10.1.rt7.274.el8_8
redhat/kernel<0:4.18.0-477.10.1.el8_8
0:4.18.0-477.10.1.el8_8
redhat/kernel<0:5.14.0-284.11.1.el9_2
0:5.14.0-284.11.1.el9_2
redhat/kernel-rt<0:5.14.0-284.11.1.rt14.296.el9_2
0:5.14.0-284.11.1.rt14.296.el9_2
redhat/kernel<6.2
6.2
ubuntu/linux<5.4.0-146.163
5.4.0-146.163
ubuntu/linux<5.15.0-69.76
5.15.0-69.76
ubuntu/linux<5.19.0-38.39
5.19.0-38.39
ubuntu/linux<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-aws<5.4.0-1099.107
5.4.0-1099.107
ubuntu/linux-aws<5.15.0-1033.37
5.15.0-1033.37
ubuntu/linux-aws<5.19.0-1022.23
5.19.0-1022.23
ubuntu/linux-aws<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-aws-5.0<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-aws-5.15<5.15.0-1033.37~20.04.1
5.15.0-1033.37~20.04.1
ubuntu/linux-aws-5.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-aws-5.4<5.4.0-1099.107~18.04.1
5.4.0-1099.107~18.04.1
ubuntu/linux-aws-5.4<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-aws-6.5<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-aws-fips<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-aws-hwe<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-azure<5.4.0-1105.111
5.4.0-1105.111
ubuntu/linux-azure<5.15.0-1035.42
5.15.0-1035.42
ubuntu/linux-azure<5.19.0-1022.23
5.19.0-1022.23
ubuntu/linux-azure<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-azure-4.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-azure-5.15<5.15.0-1035.42~20.04.1
5.15.0-1035.42~20.04.1
ubuntu/linux-azure-5.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-azure-5.19<5.19.0-1022.23~22.04.1
5.19.0-1022.23~22.04.1
ubuntu/linux-azure-5.4<5.4.0-1105.111~18.04.1
5.4.0-1105.111~18.04.1
ubuntu/linux-azure-5.4<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-azure-6.5<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-azure-edge<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-azure-fde<5.4.0-1105.111
5.4.0-1105.111
ubuntu/linux-azure-fde<5.15.0-1035.42.1
5.15.0-1035.42.1
ubuntu/linux-azure-fde<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-azure-fde-5.15<5.15.0-1035.42~20.04.1.1
5.15.0-1035.42~20.04.1.1
ubuntu/linux-azure-fde-5.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-azure-fips<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-bluefield<5.4.0-1060.66
5.4.0-1060.66
ubuntu/linux-bluefield<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-dell300x<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-fips<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gcp<5.4.0-1102.111
5.4.0-1102.111
ubuntu/linux-gcp<5.15.0-1031.38
5.15.0-1031.38
ubuntu/linux-gcp<5.19.0-1019.21
5.19.0-1019.21
ubuntu/linux-gcp<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gcp-4.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gcp-5.15<5.15.0-1031.38~20.04.1
5.15.0-1031.38~20.04.1
ubuntu/linux-gcp-5.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gcp-5.4<5.4.0-1102.111~18.04.2
5.4.0-1102.111~18.04.2
ubuntu/linux-gcp-5.4<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gcp-6.5<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gcp-fips<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gke<5.4.0-1096.103
5.4.0-1096.103
ubuntu/linux-gke<5.15.0-1030.35
5.15.0-1030.35
ubuntu/linux-gke<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gke-4.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gke-5.0<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gke-5.15<5.15.0-1029.34~20.04.1
5.15.0-1029.34~20.04.1
ubuntu/linux-gke-5.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gke-5.4<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gkeop<5.4.0-1066.70
5.4.0-1066.70
ubuntu/linux-gkeop<5.15.0-1017.22
5.15.0-1017.22
ubuntu/linux-gkeop<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gkeop-5.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-gkeop-5.4<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-hwe<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-hwe-5.15<5.15.0-69.76~20.04.1
5.15.0-69.76~20.04.1
ubuntu/linux-hwe-5.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-hwe-5.19<5.19.0-38.39~22.04.1
5.19.0-38.39~22.04.1
ubuntu/linux-hwe-5.4<5.4.0-146.163~18.04.1
5.4.0-146.163~18.04.1
ubuntu/linux-hwe-5.4<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-hwe-6.5<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-hwe-edge<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-ibm<5.4.0-1046.51
5.4.0-1046.51
ubuntu/linux-ibm<5.15.0-1027.30
5.15.0-1027.30
ubuntu/linux-ibm<5.19.0-1019.21
5.19.0-1019.21
ubuntu/linux-ibm<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-ibm-5.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-ibm-5.4<5.4.0-1046.51~18.04.1
5.4.0-1046.51~18.04.1
ubuntu/linux-ibm-5.4<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-intel<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-intel-5.13<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-intel-iotg<5.15.0-1027.32
5.15.0-1027.32
ubuntu/linux-intel-iotg<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-intel-iotg-5.15<5.15.0-1027.32~20.04.1
5.15.0-1027.32~20.04.1
ubuntu/linux-intel-iotg-5.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-iot<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-kvm<5.4.0-1088.94
5.4.0-1088.94
ubuntu/linux-kvm<5.15.0-1030.35
5.15.0-1030.35
ubuntu/linux-kvm<5.19.0-1020.21
5.19.0-1020.21
ubuntu/linux-kvm<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-laptop<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-lowlatency<5.15.0-69.76
5.15.0-69.76
ubuntu/linux-lowlatency<5.19.0-1021.22
5.19.0-1021.22
ubuntu/linux-lowlatency<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-69.76~20.04.1
5.15.0-69.76~20.04.1
ubuntu/linux-lowlatency-hwe-5.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-lowlatency-hwe-5.19<5.19.0-1021.22~22.04.1
5.19.0-1021.22~22.04.1
ubuntu/linux-lowlatency-hwe-5.19<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-lowlatency-hwe-6.5<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-lts-xenial<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-nvidia<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-nvidia-6.5<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oem<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oem-5.10<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oem-5.14<5.14.0-1059.67
5.14.0-1059.67
ubuntu/linux-oem-5.14<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oem-5.17<5.17.0-1029.30
5.17.0-1029.30
ubuntu/linux-oem-5.17<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oem-5.6<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oem-6.0<6.0.0-1013.13
6.0.0-1013.13
ubuntu/linux-oem-6.0<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oem-6.1<6.1.0-1008.8
6.1.0-1008.8
ubuntu/linux-oem-6.1<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oem-6.5<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oem-6.8<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oem-osp1<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oracle<5.4.0-1098.107
5.4.0-1098.107
ubuntu/linux-oracle<5.15.0-1032.38
5.15.0-1032.38
ubuntu/linux-oracle<5.19.0-1019.22
5.19.0-1019.22
ubuntu/linux-oracle<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oracle-5.0<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oracle-5.13<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oracle-5.15<5.15.0-1032.38~20.04.1
5.15.0-1032.38~20.04.1
ubuntu/linux-oracle-5.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oracle-5.4<5.4.0-1098.107~18.04.1
5.4.0-1098.107~18.04.1
ubuntu/linux-oracle-5.4<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-oracle-6.5<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-raspi<5.4.0-1082.93
5.4.0-1082.93
ubuntu/linux-raspi<5.15.0-1026.28
5.15.0-1026.28
ubuntu/linux-raspi<5.19.0-1015.22
5.19.0-1015.22
ubuntu/linux-raspi<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-raspi-5.4<5.4.0-1082.93~18.04.1
5.4.0-1082.93~18.04.1
ubuntu/linux-raspi-5.4<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-raspi2<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-riscv<5.19.0-1015.16
5.19.0-1015.16
ubuntu/linux-riscv<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-riscv-5.15<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-riscv-6.5<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-snapdragon<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-starfive<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-starfive-6.5<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
ubuntu/linux-xilinx-zynqmp<5.4.0-1023.27
5.4.0-1023.27
ubuntu/linux-xilinx-zynqmp<6.2~<5.4.233<5.15.96
6.2~
5.4.233
5.15.96
debian/linux
5.10.218-1
5.10.221-1
6.1.94-1
6.1.99-1
6.9.8-1
6.9.9-1

Remedy

This vulnerability can be mitigated by disabling the nested virtualization feature: ``` # modprobe -r kvm_intel # modprobe kvm_intel nested=0 ```

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