RHSA-2026:59546: Important: ignition security update

Published Aug 25, 2026
·
Updated

Ignition is a utility used to manipulate systems during the initramfs. This includes partitioning disks, formatting partitions, writing files (regular files, systemd units, etc.), and configuring users. On first boot, Ignition reads its configuration from a source of truth (remote URL, network metadata service, hypervisor bridge, etc.) and applies the configuration.Security Fix(es): crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application (CVE-2026-33810) golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821) 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.

Affected Software

32 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
redhat/ignition<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-debuginfo<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-debugsource<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-edge<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-validate<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-validate-debuginfo<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-debuginfo<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-debugsource<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-edge<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-validate<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-validate-debuginfo<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-debuginfo<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-debugsource<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-edge<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-validate<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition-validate-debuginfo<2.21.0-2.el10_0.3
2.21.0-2.el10_0.3
redhat/ignition<2.21.0-2.el10_0.3.aa
2.21.0-2.el10_0.3.aa
redhat/ignition-debuginfo<2.21.0-2.el10_0.3.aa
2.21.0-2.el10_0.3.aa
redhat/ignition-debugsource<2.21.0-2.el10_0.3.aa
2.21.0-2.el10_0.3.aa
redhat/ignition-edge<2.21.0-2.el10_0.3.aa
2.21.0-2.el10_0.3.aa
redhat/ignition-validate<2.21.0-2.el10_0.3.aa
2.21.0-2.el10_0.3.aa
redhat/ignition-validate-debuginfo<2.21.0-2.el10_0.3.aa
2.21.0-2.el10_0.3.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/ignition to a version that resolves this vulnerability.

    Fixed in 2.21.0-2.el10_0.3
  2. Upgrade

    Upgrade redhat/ignition-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.21.0-2.el10_0.3
  3. Upgrade

    Upgrade redhat/ignition-debugsource to a version that resolves this vulnerability.

    Fixed in 2.21.0-2.el10_0.3
  4. Upgrade

    Upgrade redhat/ignition-edge to a version that resolves this vulnerability.

    Fixed in 2.21.0-2.el10_0.3
  5. Upgrade

    Upgrade redhat/ignition-validate to a version that resolves this vulnerability.

    Fixed in 2.21.0-2.el10_0.3
  6. Upgrade

    Upgrade redhat/ignition-validate-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.21.0-2.el10_0.3
  7. Upgrade

    Upgrade redhat/ignition to a version that resolves this vulnerability.

    Fixed in 2.21.0-2.el10_0.3.aa
  8. Upgrade

    Upgrade redhat/ignition-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.21.0-2.el10_0.3.aa
  9. Upgrade

    Upgrade redhat/ignition-debugsource to a version that resolves this vulnerability.

    Fixed in 2.21.0-2.el10_0.3.aa
  10. Upgrade

    Upgrade redhat/ignition-edge to a version that resolves this vulnerability.

    Fixed in 2.21.0-2.el10_0.3.aa
  11. Upgrade

    Upgrade redhat/ignition-validate to a version that resolves this vulnerability.

    Fixed in 2.21.0-2.el10_0.3.aa
  12. Upgrade

    Upgrade redhat/ignition-validate-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.21.0-2.el10_0.3.aa
  13. Upgrade

    Upgrade golang.org/x/net/idna to a version that resolves this vulnerability.

    Patch CVE-2026-39821
  14. Upgrade

    Upgrade crypto/x509 to a version that resolves this vulnerability.

    Patch CVE-2026-33810

Event History

Aug 25, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·05:07 PM
Data Sourced
via Red Hat·05:07 PM
Severity

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203