RHSA-2026:97562HighCVSS 7.5

Red Hat Security Advisory: skopeo security, bug fix, and enhancement update

Published
November 10, 2026
Last Modified
November 10, 2026

🔗 CVE IDs covered (2)

CVE-2026-33811 →CVE-2026-41567 →

📋 Description

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

🎯 Affected products18

  • Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-3:1.22.2-4.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-3:1.22.2-4.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-3:1.22.2-4.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-3:1.22.2-4.el9.src as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-3:1.22.2-4.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-debuginfo-3:1.22.2-4.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-debuginfo-3:1.22.2-4.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-debuginfo-3:1.22.2-4.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-debuginfo-3:1.22.2-4.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-debugsource-3:1.22.2-4.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-debugsource-3:1.22.2-4.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-debugsource-3:1.22.2-4.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-debugsource-3:1.22.2-4.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-tests-3:1.22.2-4.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-tests-3:1.22.2-4.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-tests-3:1.22.2-4.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • skopeo-tests-3:1.22.2-4.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: To mitigate this issue, applications can be configured to use the pure Go DNS resolver instead of the `cgo` DNS resolver. This can be achieved by setting the `GODEBUG` environment variable to `netdns=go`. For example, to run a Go application with this mitigation: `GODEBUG=netdns=go /path/to/your/go/application`. This change may require restarting affected applications or services to take effect. Users should verify that this change does not negatively impact DNS resolution for their specific application environment. Workaround: To mitigate this issue, Red Hat recommends only running containers from trusted images. Additionally, users should avoid piping compressed archives into containers created from untrusted images. For environments utilizing authorization plugins, restricting access to the `PUT /containers/{id}/archive` endpoint can further reduce exposure.

🔗 References (9)