F5-K000159891: Medium severity F5 BIG-IP Next for Kubernetes vulnerability

Published Feb 5, 2026
·
Updated

Validating certificate chains which contain DSA public keys can cause programs to panic, due to a interface cast that assumes they implement the Equal method. This affects programs which validate arbitrary certificate chains.

Affected Software

1 affected componentFixes available
F5 BIG-IP Next for Kubernetes=2.1.0
2.2.0

Event History

Feb 5, 2026
Advisory Published
via F5·05:42 PM
Data Sourced
via F5·05:42 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of F5-K000159891?

The severity of F5-K000159891 is critical due to the potential for program panic during certificate chain validation.

2

How do I fix F5-K000159891?

To fix F5-K000159891, upgrade to the non-vulnerable version 2.2.0 or higher of F5 BIG-IP Next for Kubernetes.

3

What platforms are affected by F5-K000159891?

F5-K000159891 affects F5 BIG-IP Next for Kubernetes specifically on version 2.1.0.

4

What issue does F5-K000159891 address?

F5-K000159891 addresses issues with validating certificate chains that include DSA public keys, which can lead to program crashes.

5

Is there a workaround for F5-K000159891?

There is no documented workaround for F5-K000159891, the recommended action is to upgrade to the latest version.

Contact

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