RHSA-2026:38504 — Security Advisory
Red Hat Security Advisory: container-tools:rhel8 security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · July 13, 2026
Updated · November 5, 2026
Topic
An update for the container-tools:rhel8 module 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 container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc.
Security Fix(es):
-
net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811)
-
golang.org/x/crypto/ssh: golang: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate (CVE-2026-39835)
-
podman: Podman: Information disclosure via malicious container image environment variables (CVE-2026-57231)
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.