Race Condition Affecting kernel-core package, versions <0:4.18.0-372.16.1.el8_6


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating

    Threat Intelligence

    EPSS
    0.05% (18th percentile)

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  • Snyk ID SNYK-ROCKY8-KERNELCORE-3198180
  • published 5 Jan 2023
  • disclosed 1 Sep 2022

How to fix?

Upgrade Rocky-Linux:8 kernel-core to version 0:4.18.0-372.16.1.el8_6 or higher.
This issue was patched in RLSA-2022:5564.

NVD Description

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

A race condition was found the Linux kernel in perf_event_open() which can be exploited by an unprivileged user to gain root privileges. The bug allows to build several exploit primitives such as kernel address information leak, arbitrary execution, etc.

CVSS Scores

version 3.1
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NVD

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

8.2 high
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Red Hat

7.4 high