Expected Behavior Violation Affecting kernel-rt-modules package, versions <0:4.18.0-193.13.2.rt13.65.el8_2


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELRTMODULES-3784966
  • published26 Jul 2021
  • disclosed9 Jun 2020

Introduced: 9 Jun 2020

CVE-2020-10767  (opens in a new tab)
CWE-440  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-rt-modules to version 0:4.18.0-193.13.2.rt13.65.el8_2 or higher.
This issue was patched in RHSA-2020:3016.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-modules package and not the kernel-rt-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 implementation of the Enhanced IBPB (Indirect Branch Prediction Barrier). The IBPB mitigation will be disabled when STIBP is not available or when the Enhanced Indirect Branch Restricted Speculation (IBRS) is available. This flaw allows a local attacker to perform a Spectre V2 style attack when this configuration is active. The highest threat from this vulnerability is to confidentiality.

CVSS Scores

version 3.1