medium
5.6
CWE
362 367
Advisory Published
CVE Published
CVE Published
Updated

CVE-2023-4155: Sev-es / sev-snp vmgexit double fetch vulnerability

First published: Fri Jun 09 2023(Updated: )

A flaw was found in KVM AMD Secure Encrypted Virtualization (SEV) in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the `VMGEXIT` handler recursively. If an attacker manages to call the handler multiple times, they can trigger a stack overflow and cause a denial of service or potentially guest-to-host escape in kernel configurations without stack guard pages (`CONFIG_VMAP_STACK`).

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel
Redhat Enterprise Linux=8.0
Redhat Enterprise Linux=9.0
Fedoraproject Fedora=37
Fedoraproject Fedora=38
IBM QRadar SIEM<=7.5 - 7.5.0 UP8 IF01
ubuntu/linux<5.15.0-86.96
5.15.0-86.96
ubuntu/linux<6.2.0-34.34
6.2.0-34.34
ubuntu/linux<6.5~
6.5~
ubuntu/linux-allwinner<6.5~
6.5~
ubuntu/linux-allwinner-5.19<6.5~
6.5~
ubuntu/linux-aws<5.15.0-1047.52
5.15.0-1047.52
ubuntu/linux-aws<6.2.0-1013.13
6.2.0-1013.13
ubuntu/linux-aws<6.5~
6.5~
ubuntu/linux-aws-5.0<6.5~
6.5~
ubuntu/linux-aws-5.15<5.15.0-1047.52~20.04.1
5.15.0-1047.52~20.04.1
ubuntu/linux-aws-5.15<6.5~
6.5~
ubuntu/linux-aws-5.19<6.5~
6.5~
ubuntu/linux-aws-5.4<6.5~
6.5~
ubuntu/linux-aws-6.2<6.2.0-1013.13~22.04.1
6.2.0-1013.13~22.04.1
ubuntu/linux-aws-6.2<6.5~
6.5~
ubuntu/linux-aws-6.5<6.5~
6.5~
ubuntu/linux-aws-fips<6.5~
6.5~
ubuntu/linux-aws-hwe<6.5~
6.5~
ubuntu/linux-azure<5.15.0-1049.56
5.15.0-1049.56
ubuntu/linux-azure<6.2.0-1014.14
6.2.0-1014.14
ubuntu/linux-azure<6.5~
6.5~
ubuntu/linux-azure-4.15<6.5~
6.5~
ubuntu/linux-azure-5.15<5.15.0-1049.56~20.04.1
5.15.0-1049.56~20.04.1
ubuntu/linux-azure-5.15<6.5~
6.5~
ubuntu/linux-azure-5.4<6.5~
6.5~
ubuntu/linux-azure-6.2<6.2.0-1014.14~22.04.1
6.2.0-1014.14~22.04.1
ubuntu/linux-azure-6.2<6.5~
6.5~
ubuntu/linux-azure-6.5<6.5~
6.5~
ubuntu/linux-azure-edge<6.5~
6.5~
ubuntu/linux-azure-fde<5.15.0-1049.56.1
5.15.0-1049.56.1
ubuntu/linux-azure-fde<6.5~
6.5~
ubuntu/linux-azure-fde-5.15<5.15.0-1049.56~20.04.1.1
5.15.0-1049.56~20.04.1.1
ubuntu/linux-azure-fde-5.15<6.5~
6.5~
ubuntu/linux-azure-fde-5.19<6.5~
6.5~
ubuntu/linux-azure-fde-6.2<6.2.0-1014.14~22.04.1.1
6.2.0-1014.14~22.04.1.1
ubuntu/linux-azure-fde-6.2<6.5~
6.5~
ubuntu/linux-azure-fips<6.5~
6.5~
ubuntu/linux-bluefield<5.15.0-1027.29
5.15.0-1027.29
ubuntu/linux-bluefield<6.5~
6.5~
ubuntu/linux-dell300x<6.5~
6.5~
ubuntu/linux-fips<6.5~
6.5~
ubuntu/linux-gcp<5.15.0-1044.52
5.15.0-1044.52
ubuntu/linux-gcp<6.2.0-1016.18
6.2.0-1016.18
ubuntu/linux-gcp<6.5~
6.5~
ubuntu/linux-gcp-4.15<6.5~
6.5~
ubuntu/linux-gcp-5.15<5.15.0-1044.52~20.04.1
5.15.0-1044.52~20.04.1
ubuntu/linux-gcp-5.15<6.5~
6.5~
ubuntu/linux-gcp-5.19<6.5~
6.5~
ubuntu/linux-gcp-5.4<6.5~
6.5~
ubuntu/linux-gcp-6.2<6.2.0-1016.18~22.04.1
6.2.0-1016.18~22.04.1
ubuntu/linux-gcp-6.5<6.5~
6.5~
ubuntu/linux-gcp-fips<6.5~
6.5~
ubuntu/linux-gke<5.15.0-1044.49
5.15.0-1044.49
ubuntu/linux-gke<6.5~
6.5~
ubuntu/linux-gke-4.15<6.5~
6.5~
ubuntu/linux-gke-5.0<6.5~
6.5~
ubuntu/linux-gke-5.15<6.5~
6.5~
ubuntu/linux-gke-5.4<6.5~
6.5~
ubuntu/linux-gkeop<5.15.0-1030.35
5.15.0-1030.35
ubuntu/linux-gkeop<6.5~
6.5~
ubuntu/linux-gkeop-5.15<5.15.0-1030.35~20.04.1
5.15.0-1030.35~20.04.1
ubuntu/linux-gkeop-5.15<6.5~
6.5~
ubuntu/linux-gkeop-5.4<6.5~
6.5~
ubuntu/linux-hwe<6.5~
6.5~
ubuntu/linux-hwe-5.15<5.15.0-86.96~20.04.1
5.15.0-86.96~20.04.1
ubuntu/linux-hwe-5.15<6.5~
6.5~
ubuntu/linux-hwe-5.4<6.5~
6.5~
ubuntu/linux-hwe-6.2<6.2.0-34.34~22.04.1
6.2.0-34.34~22.04.1
ubuntu/linux-hwe-6.2<6.5~
6.5~
ubuntu/linux-hwe-6.5<6.5~
6.5~
ubuntu/linux-hwe-edge<6.5~
6.5~
ubuntu/linux-ibm<5.15.0-1040.43
5.15.0-1040.43
ubuntu/linux-ibm<6.5~
6.5~
ubuntu/linux-ibm-5.15<5.15.0-1040.43~20.04.1
5.15.0-1040.43~20.04.1
ubuntu/linux-ibm-5.15<6.5~
6.5~
ubuntu/linux-ibm-5.4<6.5~
6.5~
ubuntu/linux-intel<6.5~
6.5~
ubuntu/linux-intel-5.13<6.5~
6.5~
ubuntu/linux-intel-iotg<5.15.0-1043.49
5.15.0-1043.49
ubuntu/linux-intel-iotg<6.5~
6.5~
ubuntu/linux-intel-iotg-5.15<5.15.0-1043.49~20.04.1
5.15.0-1043.49~20.04.1
ubuntu/linux-intel-iotg-5.15<6.5~
6.5~
ubuntu/linux-iot<6.5~
6.5~
ubuntu/linux-kvm<5.15.0-1044.49
5.15.0-1044.49
ubuntu/linux-kvm<6.2.0-1014.14
6.2.0-1014.14
ubuntu/linux-kvm<6.5~
6.5~
ubuntu/linux-laptop<6.5~
6.5~
ubuntu/linux-lowlatency<5.15.0-86.95
5.15.0-86.95
ubuntu/linux-lowlatency<6.2.0-1014.14
6.2.0-1014.14
ubuntu/linux-lowlatency<6.5~
6.5~
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-86.95~20.04.1
5.15.0-86.95~20.04.1
ubuntu/linux-lowlatency-hwe-5.15<6.5~
6.5~
ubuntu/linux-lowlatency-hwe-5.19<6.5~
6.5~
ubuntu/linux-lowlatency-hwe-6.2<6.2.0-1014.14~22.04.1
6.2.0-1014.14~22.04.1
ubuntu/linux-lowlatency-hwe-6.2<6.5~
6.5~
ubuntu/linux-lowlatency-hwe-6.5<6.5~
6.5~
ubuntu/linux-lts-xenial<6.5~
6.5~
ubuntu/linux-nvidia<5.15.0-1037.37
5.15.0-1037.37
ubuntu/linux-nvidia<6.5~
6.5~
ubuntu/linux-nvidia-6.2<6.2.0-1011.11
6.2.0-1011.11
ubuntu/linux-nvidia-6.5<6.5~
6.5~
ubuntu/linux-nvidia-6.8<6.5~
6.5~
ubuntu/linux-nvidia-lowlatency<6.5~
6.5~
ubuntu/linux-oem<6.5~
6.5~
ubuntu/linux-oem-5.10<6.5~
6.5~
ubuntu/linux-oem-5.14<6.5~
6.5~
ubuntu/linux-oem-5.17<6.5~
6.5~
ubuntu/linux-oem-5.6<6.5~
6.5~
ubuntu/linux-oem-6.0<6.5~
6.5~
ubuntu/linux-oem-6.1<6.1.0-1021.21
6.1.0-1021.21
ubuntu/linux-oem-6.1<6.5~
6.5~
ubuntu/linux-oem-6.5<6.5~
6.5~
ubuntu/linux-oem-6.8<6.5~
6.5~
ubuntu/linux-oem-osp1<6.5~
6.5~
ubuntu/linux-oracle<5.15.0-1045.51
5.15.0-1045.51
ubuntu/linux-oracle<6.2.0-1013.13
6.2.0-1013.13
ubuntu/linux-oracle<6.5~
6.5~
ubuntu/linux-oracle-5.0<6.5~
6.5~
ubuntu/linux-oracle-5.13<6.5~
6.5~
ubuntu/linux-oracle-5.15<5.15.0-1045.51~20.04.1
5.15.0-1045.51~20.04.1
ubuntu/linux-oracle-5.15<6.5~
6.5~
ubuntu/linux-oracle-5.4<6.5~
6.5~
ubuntu/linux-oracle-6.5<6.5~
6.5~
ubuntu/linux-raspi<5.15.0-1040.43
5.15.0-1040.43
ubuntu/linux-raspi<6.2.0-1014.16
6.2.0-1014.16
ubuntu/linux-raspi<6.5~
6.5~
ubuntu/linux-raspi-5.4<6.5~
6.5~
ubuntu/linux-raspi2<6.5~
6.5~
ubuntu/linux-riscv<6.2.0-34.34.1
6.2.0-34.34.1
ubuntu/linux-riscv<6.5~
6.5~
ubuntu/linux-riscv-5.15<5.15.0-1043.47~20.04.1
5.15.0-1043.47~20.04.1
ubuntu/linux-riscv-5.15<6.5~
6.5~
ubuntu/linux-riscv-6.5<6.5~
6.5~
ubuntu/linux-snapdragon<6.5~
6.5~
ubuntu/linux-starfive<6.2.0-1006.7
6.2.0-1006.7
ubuntu/linux-starfive<6.5~
6.5~
ubuntu/linux-starfive-5.19<6.5~
6.5~
ubuntu/linux-starfive-6.5<6.5~
6.5~
ubuntu/linux-xilinx-zynqmp<5.15.0-1025.29
5.15.0-1025.29
ubuntu/linux-xilinx-zynqmp<6.5~
6.5~
debian/linux
5.10.223-1
6.1.106-3
6.1.99-1
6.10.6-1
6.10.7-1

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=2213802

Remedy

https://git.kernel.org/linus/291bd20d5d88814a73d43b55b9428feab2f28094

Remedy

https://git.kernel.org/linus/7588dbcebcbf0193ab5b76987396d0254270b04a

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