Expected Behavior Violation Affecting kernel-modules package, versions <0:4.18.0-193.13.2.el8_2


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.04% (14th percentile)

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  • Snyk ID SNYK-RHEL8-KERNELMODULES-3764759
  • published 26 Jul 2021
  • disclosed 9 Jun 2020

How to fix?

Upgrade RHEL:8 kernel-modules to version 0:4.18.0-193.13.2.el8_2 or higher.
This issue was patched in RHSA-2020:3010.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-modules package and not the kernel-modules package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A flaw was found in the Linux Kernel before 5.8-rc1 in the prctl() function, where it can be used to enable indirect branch speculation after it has been disabled. This call incorrectly reports it as being 'force disabled' when it is not and opens the system to Spectre v2 attacks. The highest threat from this vulnerability is to confidentiality.

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)
    High
  • Integrity (I)
    None
  • Availability (A)
    None
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Red Hat

5.5 medium
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SUSE

6.5 medium