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Out-of-bounds Write Affecting kernel-rt-kvm package, versions <0:3.10.0-1160.rt56.1131.el7

Severity

high

    Threat Intelligence

    EPSS
    0.07% (29th percentile)

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  • Snyk ID SNYK-CENTOS7-KERNELRTKVM-2175551
  • published 26 Jul 2021
  • disclosed 3 Dec 2019
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Introduced: 3 Dec 2019

CVE-2019-19332 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Centos:7 kernel-rt-kvm to version 0:3.10.0-1160.rt56.1131.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-kvm package and not the kernel-rt-kvm package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

An out-of-bounds memory write issue was found in the Linux Kernel, version 3.13 through 5.4, in the way the Linux kernel's KVM hypervisor handled the 'KVM_GET_EMULATED_CPUID' ioctl(2) request to get CPUID features emulated by the KVM hypervisor. A user or process able to access the '/dev/kvm' device could use this flaw to crash the system, resulting in a denial of service.

References

CVSS Scores

version 3.1
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Snyk

6.1 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    Low
  • Availability (A)
    High
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NVD

6.1 medium
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SUSE

6.7 medium
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Red Hat

6.1 medium