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Out-of-bounds Write Affecting kernel-rt-modules-extra package, versions <0:4.18.0-553.rt7.342.el8_10

Severity

 Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-CENTOS8-KERNELRTMODULESEXTRA-2407811
  • published 21 Feb 2022
  • disclosed 14 Jan 2022
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Introduced: 14 Jan 2022

CVE-2022-0500 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Centos:8 kernel-rt-modules-extra to version 0:4.18.0-553.rt7.342.el8_10 or higher.

NVD Description

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

A flaw was found in unrestricted eBPF usage by the BPF_BTF_LOAD, leading to a possible out-of-bounds memory write in the Linux kernel’s BPF subsystem due to the way a user loads BTF. This flaw allows a local user to crash or escalate their privileges on the system.

References

CVSS Scores

version 3.1
Expand this section

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 high
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SUSE

7.8 high