Use After Free Affecting kernel-rt-devel package, versions <0:4.18.0-425.3.1.rt7.213.el8


Severity

Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.04% (14th percentile)

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  • Snyk ID SNYK-CENTOS8-KERNELRTDEVEL-2988976
  • published 23 Aug 2022
  • disclosed 10 Jan 2022

How to fix?

Upgrade Centos:8 kernel-rt-devel to version 0:4.18.0-425.3.1.rt7.213.el8 or higher.

NVD Description

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

A flaw was found in the Linux kernel's implementation of Pressure Stall Information. While the feature is disabled by default, it could allow an attacker to crash the system or have other memory-corruption side effects.

CVSS Scores

version 3.1
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NVD

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

Red Hat

7.8 high
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SUSE

6.7 medium