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CVE-2018-18021

Description

arch/arm64/kvm/guest.c in KVM in the Linux kernel before 4.18.12 on the arm64 platform mishandles the KVM_SET_ON_REG ioctl. This is exploitable by attackers who can create virtual machines. An attacker can arbitrarily redirect the hypervisor flow of control (with full register control). An attacker can also cause a denial of service (hypervisor panic) via an illegal exception return. This occurs because of insufficient restrictions on userspace access to the core register file, and because PSTATE.M validation does not prevent unintended execution modes.

Risk Information

Base Score
7.1
MODERATE
Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
EPSS Score
Exploitation Probability
0.088

Associated Vulnerability

VulnerabilityOS Platform
Linux kernel (USN-3931-1) linux-image-aws_4.15.0.1035.34_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-gcp_4.15.0.1029.31_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-kvm_4.15.0.1031.31_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-oem_4.15.0.1035.40_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-oracle_4.15.0.1010.13_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-generic_4.15.0.47.49_i386.debLinux
Linux kernel (USN-3931-1) linux-image-generic_4.15.0.47.49_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-virtual_4.15.0.47.49_i386.debLinux
Linux kernel (USN-3931-1) linux-image-virtual_4.15.0.47.49_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-lowlatency_4.15.0.47.49_i386.debLinux
Linux kernel (USN-3931-1) linux-image-lowlatency_4.15.0.47.49_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-4.15.0-1029-gcp_4.15.0-1029.31_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-4.15.0-1031-kvm_4.15.0-1031.31_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-4.15.0-1035-aws_4.15.0-1035.37_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-4.15.0-1035-oem_4.15.0-1035.40_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-4.15.0-47-generic_4.15.0-47.50_i386.debLinux
Linux kernel (USN-3931-1) linux-image-4.15.0-47-generic_4.15.0-47.50_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-4.15.0-1010-oracle_4.15.0-1010.12_amd64.debLinux
Linux kernel (USN-3931-1) linux-image-4.15.0-47-lowlatency_4.15.0-47.50_i386.debLinux
Linux kernel (USN-3931-1) linux-image-4.15.0-47-lowlatency_4.15.0-47.50_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-gcp_4.15.0.1029.43_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-gke_4.15.0.1029.43_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-oem_4.15.0.47.68_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-azure_4.15.0.1041.45_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-oracle_4.15.0.1010.4_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-4.15.0-1029-gcp_4.15.0-1029.31~16.04.1_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-4.15.0-1035-aws_4.15.0-1035.37~16.04.1_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-4.15.0-1041-azure_4.15.0-1041.45_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-4.15.0-1041-azure_4.15.0-1041.45~14.04.1_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-4.15.0-47-generic_4.15.0-47.50~16.04.1_i386.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-4.15.0-47-generic_4.15.0-47.50~16.04.1_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-generic-hwe-16.04_4.15.0.47.68_i386.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-generic-hwe-16.04_4.15.0.47.68_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-virtual-hwe-16.04_4.15.0.47.68_i386.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-virtual-hwe-16.04_4.15.0.47.68_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-4.15.0-1010-oracle_4.15.0-1010.12~16.04.1_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-4.15.0-47-lowlatency_4.15.0-47.50~16.04.1_i386.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-4.15.0-47-lowlatency_4.15.0-47.50~16.04.1_amd64.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-lowlatency-hwe-16.04_4.15.0.47.68_i386.debLinux
Linux kernel for Amazon Web Services (AWS-HWE) systems (USN-3931-2) linux-image-lowlatency-hwe-16.04_4.15.0.47.68_amd64.debLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234