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

Fixed packages 4

Vulnerabilities 2

• High 7.5
  CVE-2026-33811

  Crash when handling long CNAME response in net

  When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.

  Go standard library net golang go Debian Ubuntu Azure Linux Alpine Wolfi Go
  May 7, 2026
• High 7.2
  CVE-2026-41567 Public exploit

  Docker: `PUT /containers/{id}/archive` executes container binary on the host

  Moby is an open source container framework. In versions prior to 29.5.1 and in moby/moby v2 prior to v2.0.0-beta.14, when a compressed archive is uploaded to a container via `PUT /containers/{id}/archive` or piped through `docker cp -`, the daemon resolves de…

  Docker moby moby/v2/daemon docker/daemon Debian Ubuntu Alpine Wolfi Go
  Jun 5, 2026

References

• article
  https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/9.9_release_notes/index
• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2467822
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2485356
• article
  https://issues.redhat.com/browse/RHEL-170520
• article
  https://issues.redhat.com/browse/RHEL-185740
• article
  https://issues.redhat.com/browse/RHEL-220456
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_97562.json
• report
  https://access.redhat.com/security/cve/CVE-2026-33811
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-33811
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-33811
• article
  https://go.dev/cl/767860
• article
  https://go.dev/issue/78803
• article
  https://groups.google.com/g/golang-announce/c/qcCIEXso47M
• advisory
  https://pkg.go.dev/vuln/GO-2026-4981
• report
  https://access.redhat.com/security/cve/CVE-2026-41567
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-41567
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-41567
• article
  https://github.com/moby/moby/security/advisories/GHSA-x86f-5xw2-fm2r