RHSA-2026:67450HighCVSS 8.7

Red Hat Security Advisory: podman security update

Published
September 14, 2026
Last Modified
September 18, 2026

🔗 CVE IDs covered (6)

CVE-2026-39830 →CVE-2026-39831 →CVE-2026-39832 →CVE-2026-42508 →CVE-2026-46597 →CVE-2026-39829 →

📋 Description

CVE-2026-39829 — golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted public key with excessive parameters CVE-2026-39830 — golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via resource leak from unsolicited SSH responses CVE-2026-39831 — golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Security key bypass due to missing user presence check CVE-2026-39832 — golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: Security bypass due to improper handling of key restrictions CVE-2026-42508 — golang.org/x/crypto/ssh/knownhosts: golang: golang.org/x/crypto/ssh/knownhosts: Revocation bypass via unchecked SignatureKey CVE-2026-46597 — golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted AES-GCM packet decoder inputs

🎯 Affected products39

  • Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-5:5.4.0-22.el9_6.5.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-5:5.4.0-22.el9_6.5.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-5:5.4.0-22.el9_6.5.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-5:5.4.0-22.el9_6.5.src as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-5:5.4.0-22.el9_6.5.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-debuginfo-5:5.4.0-22.el9_6.5.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-debuginfo-5:5.4.0-22.el9_6.5.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-debuginfo-5:5.4.0-22.el9_6.5.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-debuginfo-5:5.4.0-22.el9_6.5.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-debugsource-5:5.4.0-22.el9_6.5.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-debugsource-5:5.4.0-22.el9_6.5.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-debugsource-5:5.4.0-22.el9_6.5.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-debugsource-5:5.4.0-22.el9_6.5.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-docker-5:5.4.0-22.el9_6.5.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-plugins-5:5.4.0-22.el9_6.5.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-plugins-5:5.4.0-22.el9_6.5.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-plugins-5:5.4.0-22.el9_6.5.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-plugins-5:5.4.0-22.el9_6.5.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-plugins-debuginfo-5:5.4.0-22.el9_6.5.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-plugins-debuginfo-5:5.4.0-22.el9_6.5.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-plugins-debuginfo-5:5.4.0-22.el9_6.5.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-plugins-debuginfo-5:5.4.0-22.el9_6.5.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-remote-5:5.4.0-22.el9_6.5.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-remote-5:5.4.0-22.el9_6.5.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-remote-5:5.4.0-22.el9_6.5.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-remote-5:5.4.0-22.el9_6.5.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-remote-debuginfo-5:5.4.0-22.el9_6.5.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-remote-debuginfo-5:5.4.0-22.el9_6.5.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • podman-remote-debuginfo-5:5.4.0-22.el9_6.5.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • +9 more not shown

✅ 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: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. Workaround: To mitigate this denial of service vulnerability, restrict network access to any service that utilizes the `golang.org/x/crypto/ssh` library and is exposed to untrusted networks. Implement firewall rules to allow connections only from trusted hosts or networks. This action limits the ability of malicious peers to send unsolicited global request responses. A restart of the affected service may be necessary for the new network rules to be applied effectively.

🔗 References (9)