RHSA-2021:4236 — Security Advisory

Red Hat Security Advisory: tcpdump security and bug fix update

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Severity

Low

Red Hat Product Security

RHEL 8

Products

Official CSAF product identity

Published · November 10, 2021

Updated · November 22, 2025

Topic

An update for tcpdump is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The tcpdump packages contain the tcpdump utility for monitoring network traffic. The tcpdump utility can capture and display the packet headers on a particular network interface or on all interfaces.

Security Fix(es):

  • tcpdump: ppp decapsulator can be convinced to allocate a large amount of memory (CVE-2020-8037)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.

Related CVEs

RHSA-2021:4236 — Red Hat Security Advisory: tcpdump security and bug fix update | PulseLinux