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CVE-2019-6974

HIGHCVSS 8.1/10EPSS 16.52%

Last modified

CVE-2019-6974 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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.. EPSS estimates a 16.52% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.1/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
16.52%

96.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel>= 3.10, < 3.16.64
LinuxLinux Kernel>= 3.17, < 3.18.136
LinuxLinux Kernel>= 3.19, < 4.4.176
LinuxLinux Kernel>= 4.5, < 4.9.156
LinuxLinux Kernel>= 4.10, < 4.14.99
LinuxLinux Kernel>= 4.15, < 4.19.21
LinuxLinux Kernel>= 4.20, < 4.20.8
DebianDebian Linux8.0
CanonicalUbuntu Linux12.04
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux16.04
CanonicalUbuntu Linux18.04
CanonicalUbuntu Linux18.10
F5Big-Ip Access Policy Manager>= 13.0.0, <= 13.1.1
F5Big-Ip Access Policy Manager>= 14.0.0, <= 14.1.0
F5Big-Ip Access Policy Manager>= 15.0.0, < 15.1.0
F5Big-Ip Advanced Firewall Manager>= 13.0.0, <= 13.1.1
F5Big-Ip Advanced Firewall Manager>= 14.0.0, <= 14.1.0
F5Big-Ip Advanced Firewall Manager>= 15.0.0, < 15.1.0
F5Big-Ip Analytics>= 13.0.0, <= 13.1.1
F5Big-Ip Analytics>= 14.0.0, <= 14.1.0
F5Big-Ip Analytics>= 15.0.0, < 15.1.0
F5Big-Ip Application Acceleration Manager>= 13.0.0, <= 13.1.1
F5Big-Ip Application Acceleration Manager>= 14.0.0, <= 14.1.0
F5Big-Ip Application Acceleration Manager>= 15.0.0, < 15.1.0
F5Big-Ip Application Security Manager>= 13.0.0, <= 13.1.1
F5Big-Ip Application Security Manager>= 14.0.0, <= 14.1.0
F5Big-Ip Application Security Manager>= 15.0.0, < 15.1.0
F5Big-Ip Edge Gateway>= 13.0.0, <= 13.1.1
F5Big-Ip Edge Gateway>= 14.0.0, <= 14.1.0
F5Big-Ip Edge Gateway>= 15.0.0, < 15.1.0
F5Big-Ip Fraud Protection Service>= 13.0.0, <= 13.1.1
F5Big-Ip Fraud Protection Service>= 14.0.0, <= 14.1.0
F5Big-Ip Fraud Protection Service>= 15.0.0, < 15.1.0
F5Big-Ip Global Traffic Manager>= 13.0.0, <= 13.1.1
F5Big-Ip Global Traffic Manager>= 14.0.0, <= 14.1.0
F5Big-Ip Global Traffic Manager>= 15.0.0, < 15.1.0
F5Big-Ip Link Controller>= 13.0.0, <= 13.1.1
F5Big-Ip Link Controller>= 14.0.0, <= 14.1.0
F5Big-Ip Link Controller>= 15.0.0, < 15.1.0
F5Big-Ip Local Traffic Manager>= 13.0.0, <= 13.1.1
F5Big-Ip Local Traffic Manager>= 14.0.0, <= 14.1.0
F5Big-Ip Local Traffic Manager>= 15.0.0, < 15.1.0
F5Big-Ip Policy Enforcement Manager>= 13.0.0, <= 13.1.1
F5Big-Ip Policy Enforcement Manager>= 14.0.0, <= 14.1.0
F5Big-Ip Policy Enforcement Manager>= 15.0.0, < 15.1.0
F5Big-Ip Webaccelerator>= 13.0.0, <= 13.1.1
F5Big-Ip Webaccelerator>= 14.0.0, <= 14.1.0
F5Big-Ip Webaccelerator>= 15.0.0, < 15.1.0
RedhatOpenshift Container Platform3.11

Showing 50 of 60 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-6974?
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.
How severe is CVE-2019-6974?
CVE-2019-6974 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 16.52% probability of exploitation in the next 30 days.
How do I fix CVE-2019-6974?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-6974?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST