SUSE-SU-2026:3267-1: important: Security update for ignition

[SLE-SECURITY-UPDATES]

# Security update for ignition

Announcement ID: SUSE-SU-2026:3267-1  
Release Date: 2026-07-27T10:53:03Z  
Rating: important  
References:

  * bsc#1266606
  * bsc#1272059

  
Cross-References:

  * CVE-2026-39821
  * CVE-2026-56852

  
CVSS scores:

  * CVE-2026-39821 ( SUSE ):  9.1
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-39821 ( SUSE ):  7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-39821 ( NVD ):  8.2 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
  * CVE-2026-39821 ( NVD ):  9.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
  * CVE-2026-56852 ( SUSE ):  6.0
    CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-56852 ( SUSE ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-56852 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * SUSE Linux Enterprise Micro 5.3
  * SUSE Linux Enterprise Micro for Rancher 5.3

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for ignition fixes the following issues

  * CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only
    Punycode-encoded labels allows for validation bypass and privilege
    escalation (bsc#1266606).
  * CVE-2026-56852: golang.org/x/text/unicode/norm: handling of input containing
    invalid UTF-8 bytes can lead to infinite loop (bsc#1272059).

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Micro for Rancher 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-3267=1

  * SUSE Linux Enterprise Micro 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-3267=1

## Package List:

  * SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64)
    * ignition-2.14.0-150400.4.21.1
    * ignition-dracut-grub2-2.14.0-150400.4.21.1
    * ignition-debuginfo-2.14.0-150400.4.21.1
  * SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64)
    * ignition-2.14.0-150400.4.21.1
    * ignition-dracut-grub2-2.14.0-150400.4.21.1
    * ignition-debuginfo-2.14.0-150400.4.21.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-39821.html
  * https://www.suse.com/security/cve/CVE-2026-56852.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1266606
  * https://bugzilla.suse.com/show_bug.cgi?id=1272059

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