Issued:
2026-09-08
Updated:
2026-09-08

RHSA-2026:65335 - Important: ignition security update

Synopsis

Important: ignition security update

Type/Severity

Security Advisory: Important

Topic

An update for ignition is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.

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

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):

  • net/mail: golang: net/mail: Denial of Service via pathological email address parsing (CVE-2026-42499)

  • net/mail: golang: Go net/mail: Denial of Service via crafted email inputs (CVE-2026-39820)

  • encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (CVE-2026-33818)

  • net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution (CVE-2026-56860)

  • net/http: golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service (CVE-2026-56853)

  • html/template: golang: Go html/template: Cross-Site Scripting via pathological input (CVE-2026-56858)

  • crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862)

  • encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue (CVE-2026-56859)

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.

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

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Extended Update Support10.0x86_64
Red Hat Enterprise Linux for x86_64 - 4 years of updates10.0x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support10.0ppc64le
Red Hat Enterprise Linux for Power, little endian - 4 years of support10.0ppc64le
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support10.0s390x
Red Hat Enterprise Linux for IBM z Systems - 4 years of updates10.0s390x
Red Hat Enterprise Linux for ARM 64 - Extended Update Support10.0aarch64
Red Hat Enterprise Linux for ARM 64 - 4 years of updates10.0aarch64

Updated Packages

  • ignition-edge-2.21.0-3.el10_0.4.s390x.rpm
  • ignition-validate-2.21.0-3.el10_0.4.x86_64.rpm
  • ignition-debugsource-2.21.0-3.el10_0.4.s390x.rpm
  • ignition-debugsource-2.21.0-3.el10_0.4.x86_64.rpm
  • ignition-validate-debuginfo-2.21.0-3.el10_0.4.aarch64.rpm
  • ignition-validate-2.21.0-3.el10_0.4.aarch64.rpm
  • ignition-2.21.0-3.el10_0.4.ppc64le.rpm
  • ignition-2.21.0-3.el10_0.4.src.rpm
  • ignition-validate-2.21.0-3.el10_0.4.ppc64le.rpm
  • ignition-validate-debuginfo-2.21.0-3.el10_0.4.x86_64.rpm
  • ignition-2.21.0-3.el10_0.4.s390x.rpm
  • ignition-edge-2.21.0-3.el10_0.4.aarch64.rpm
  • ignition-validate-2.21.0-3.el10_0.4.s390x.rpm
  • ignition-debuginfo-2.21.0-3.el10_0.4.ppc64le.rpm
  • ignition-validate-debuginfo-2.21.0-3.el10_0.4.ppc64le.rpm
  • ignition-debuginfo-2.21.0-3.el10_0.4.x86_64.rpm
  • ignition-edge-2.21.0-3.el10_0.4.x86_64.rpm
  • ignition-validate-debuginfo-2.21.0-3.el10_0.4.s390x.rpm
  • ignition-debuginfo-2.21.0-3.el10_0.4.aarch64.rpm
  • ignition-debugsource-2.21.0-3.el10_0.4.aarch64.rpm
  • ignition-debugsource-2.21.0-3.el10_0.4.ppc64le.rpm
  • ignition-2.21.0-3.el10_0.4.aarch64.rpm
  • ignition-2.21.0-3.el10_0.4.x86_64.rpm
  • ignition-debuginfo-2.21.0-3.el10_0.4.s390x.rpm
  • ignition-edge-2.21.0-3.el10_0.4.ppc64le.rpm

Fixes

CVEs

References

Additional information