RHSA-2026:97562 - Security Advisory

Topic

An update for skopeo is now available for Red Hat Enterprise Linux 9.

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 skopeo command lets you inspect images from container image registries, get images and image layers, and use signatures to create and verify files.

Security Fix(es):

• net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811)
• docker: Moby/Docker Engine: Arbitrary Code Execution via malicious container image and compressed archive upload (CVE-2026-41567)

Bug Fix(es) and Enhancement(s):

• Update skopeo to 1.22.2 [rhel-9.9] (JIRA:RHEL-170520)
• update to the latest upstream release (JIRA:RHEL-185740)
• switch skopeo to sustaining-engineering GitLab release-1.22 branch and bump epoch (JIRA:RHEL-220456)

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 9 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 9 x86_64
• Red Hat Enterprise Linux for IBM z Systems 9 s390x
• Red Hat Enterprise Linux for Power, little endian 9 ppc64le
• Red Hat Enterprise Linux for ARM 64 9 aarch64

Fixes

• BZ - 2467822 - CVE-2026-33811 net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME
• BZ - 2485356 - CVE-2026-41567 docker: Moby/Docker Engine: Arbitrary Code Execution via malicious container image and compressed archive upload
• RHEL-170520 - Update skopeo to 1.22.2 [rhel-9.9]
• RHEL-185740 - update to the latest upstream release
• RHEL-220456 - switch skopeo to sustaining-engineering GitLab release-1.22 branch and bump epoch

CVEs

• CVE-2026-33811
• CVE-2026-41567

References

• https://access.redhat.com/security/updates/classification/#important
• https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/9.9_release_notes/index