Race Condition Affecting kernel-uki-virt package, versions <0:5.14.0-284.25.1.el9_2


Severity

Recommended
high

Based on AlmaLinux security rating

    Threat Intelligence

    EPSS
    0.04% (14th percentile)

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  • Snyk ID SNYK-ALMALINUX9-KERNELUKIVIRT-5828687
  • published 8 Aug 2023
  • disclosed 1 Aug 2023

How to fix?

Upgrade AlmaLinux:9 kernel-uki-virt to version 0:5.14.0-284.25.1.el9_2 or higher.
This issue was patched in ALSA-2023:4377.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uki-virt package and not the kernel-uki-virt package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

A race condition in the x86 KVM subsystem in the Linux kernel through 6.1-rc6 allows guest OS users to cause a denial of service (host OS crash or host OS memory corruption) when nested virtualisation and the TDP MMU are enabled.

CVSS Scores

version 3.1
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NVD

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

4.1 medium
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Red Hat

5.5 medium