RHSA-2019:2798 — Security Advisory
Red Hat Security Advisory: patch security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · September 19, 2019
Updated · November 22, 2025
Topic
An update for patch is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Important. 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 patch program applies diff files to originals. The diff command is used to compare an original to a changed file. Diff lists the changes made to the file. A person who has the original file can then use the patch command with the diff file to add the changes to their original file (patching the file).
Security Fix(es):
-
patch: do_ed_script in pch.c does not block strings beginning with a ! character (CVE-2018-20969)
-
patch: OS shell command injection when processing crafted patch files (CVE-2019-13638)
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.