Race Condition Affecting kernel-tools-devel package, versions <0:4.14.101-91.76.amzn2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
3.67% (93rd percentile)

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  • Snyk IDSNYK-AMZN2-KERNELTOOLSDEVEL-1669030
  • published27 Sept 2021
  • disclosed15 Feb 2019

Introduced: 15 Feb 2019

CVE-2019-6974  (opens in a new tab)
CWE-362  (opens in a new tab)
CWE-416  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade Amazon-Linux:2 kernel-tools-devel to version 0:4.14.101-91.76.amzn2 or higher.
This issue was patched in ALAS2-2019-1165.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools-devel package and not the kernel-tools-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

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.

References

CVSS Scores

version 3.1