Use of Insufficiently Random Values Affecting kernel-headers package, versions <0:4.18.0-372.9.1.el8


Severity

Recommended
0.0
high
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.63% (79th percentile)

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  • Snyk IDSNYK-ALMALINUX8-KERNELHEADERS-5639770
  • published28 May 2023
  • disclosed10 May 2022

Introduced: 10 May 2022

CVE-2021-20322  (opens in a new tab)
CWE-330  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 kernel-headers to version 0:4.18.0-372.9.1.el8 or higher.
This issue was patched in ALSA-2022:1988.

NVD Description

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

A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.

CVSS Scores

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