RHSA-2021:4387 — Security Advisory
Red Hat Security Advisory: libssh security update
Severity
LowRed Hat Product Security
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.