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openSUSE Ignition Important Fix for CVE-2026-39821 Buffer Overflow

opensuse
Calendar Grey July 28, 2026
Scroller Opensuse
Update for Ignition fixes critical issues including privilege escalation and infinite loop vulnerabilities for openSUSE.
A security update addresses two vulnerabilities in ignition that could lead to privilege escalation and infinite loops, affecting several SUSE products, with important patching ins...

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).

Topics%20covered

Topics Covered

security advisory privilege escalation important infinite loop OpenSUSE ignition

Patch

## 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:

* openSUSE Leap 15.4

zypper in -t patch SUSE-2026-3300=1

* SUSE Linux Enterprise Server 15 SP6 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-3300=1

* HPC Module 15-SP7

zypper in -t patch SUSE-SLE-Module-HPC-15-SP7-2026-3300=1

Package List

* openSUSE Leap 15.4 (aarch64 i586 ppc64le s390x x86_64)

* ignition-debuginfo-2.14.0-150400.9.21.1

* ignition-dracut-grub2-2.14.0-150400.9.21.1

* ignition-2.14.0-150400.9.21.1

* HPC Module 15-SP7 (aarch64 x86_64)

* ignition-debuginfo-2.14.0-150400.9.21.1

* ignition-dracut-grub2-2.14.0-150400.9.21.1

* ignition-2.14.0-150400.9.21.1

* SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 x86_64)

* ignition-debuginfo-2.14.0-150400.9.21.1

* ignition-dracut-grub2-2.14.0-150400.9.21.1

* ignition-2.14.0-150400.9.21.1

References

* bsc#1266606

* bsc#1272059

## 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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:3300-1
Release Date: 2026-07-27T17:00:29Z

Topics%20covered

Topics Covered

security advisory privilege escalation important infinite loop OpenSUSE ignition

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