RHSA-2021:4387 — Security Advisory

Red Hat Security Advisory: libssh security update

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Severity

Low

Red Hat Product Security

RHEL 8

Products

Official CSAF product identity

Published · November 10, 2021

Updated · June 25, 2026

Topic

An update for libssh 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

libssh is a library which implements the SSH protocol. It can be used to implement client and server applications.

Security Fix(es):

  • libssh: NULL pointer dereference in sftpserver.c if ssh_buffer_new returns NULL (CVE-2020-16135)

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-2021:4387 — Red Hat Security Advisory: libssh security update | PulseLinux