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CVE-2019-6974

Description

In the Linux kernel before 4.20.8, kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandles reference counting because of a race condition, leading to a use-after-free.

Risk Information

Base Score
8.1
MODERATE
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
Exploitation Probability
7.916

Associated Vulnerability

VulnerabilityOS Platform
Linux kernel (USN-3878-1) linux-image-aws_4.18.0.1012.12_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-aws_4.18.0.1012.12_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-gcp_4.18.0.1008.8_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-gke_4.18.0.1008.8_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-kvm_4.18.0.1009.9_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-azure_4.18.0.1014.15_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-generic_4.18.0.17.18_i386.debLinux
Linux kernel (USN-3930-1) linux-image-generic_4.18.0.17.18_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-virtual_4.18.0.17.18_i386.debLinux
Linux kernel (USN-3930-1) linux-image-virtual_4.18.0.17.18_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-lowlatency_4.18.0.17.18_i386.debLinux
Linux kernel (USN-3930-1) linux-image-lowlatency_4.18.0.17.18_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-4.18.0-1008-gcp_4.18.0-1008.9_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-4.18.0-1009-kvm_4.18.0-1009.9_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-4.18.0-1012-aws_4.18.0-1012.14_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-4.18.0-1014-azure_4.18.0-1014.14_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-4.18.0-17-generic_4.18.0-17.18_i386.debLinux
Linux kernel (USN-3930-1) linux-image-4.18.0-17-generic_4.18.0-17.18_amd64.debLinux
Linux kernel (USN-3930-1) linux-image-4.18.0-17-lowlatency_4.18.0-17.18_i386.debLinux
Linux kernel (USN-3930-1) linux-image-4.18.0-17-lowlatency_4.18.0-17.18_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3930-2) linux-image-azure_4.18.0.1014.13_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3930-2) linux-image-4.18.0-1014-azure_4.18.0-1014.14~18.04.1_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3930-2) linux-image-4.18.0-17-generic_4.18.0-17.18~18.04.1_i386.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3930-2) linux-image-4.18.0-17-generic_4.18.0-17.18~18.04.1_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3930-2) linux-image-generic-hwe-18.04_4.18.0.17.67_i386.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3930-2) linux-image-generic-hwe-18.04_4.18.0.17.67_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3930-2) linux-image-virtual-hwe-18.04_4.18.0.17.67_i386.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3930-2) linux-image-virtual-hwe-18.04_4.18.0.17.67_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3930-2) linux-image-4.18.0-17-lowlatency_4.18.0-17.18~18.04.1_i386.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3930-2) linux-image-4.18.0-17-lowlatency_4.18.0-17.18~18.04.1_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3930-2) linux-image-lowlatency-hwe-18.04_4.18.0.17.67_i386.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3930-2) linux-image-lowlatency-hwe-18.04_4.18.0.17.67_amd64.debLinux
Kernel-uek update (ELSA-2020-5913) kernel-uek-4.14.35-2025.402.2.1.el7uek.x86_64.rpmLinux
Kernel-uek-debug update (ELSA-2020-5913) kernel-uek-debug-4.14.35-2025.402.2.1.el7uek.x86_64.rpmLinux
Kernel-uek-debug-devel update (ELSA-2020-5913) kernel-uek-debug-devel-4.14.35-2025.402.2.1.el7uek.x86_64.rpmLinux
Kernel-uek-devel update (ELSA-2020-5913) kernel-uek-devel-4.14.35-2025.402.2.1.el7uek.x86_64.rpmLinux
Kernel-uek-tools update (ELSA-2020-5913) kernel-uek-tools-4.14.35-2025.402.2.1.el7uek.x86_64.rpmLinux
Kernel-uek-doc update (ELSA-2020-5913) kernel-uek-doc-4.14.35-2025.402.2.1.el7uek.noarch.rpmLinux
Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition) Vulnerability (CVE-2019-6974)NCM

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