Vulnerability/
REDHAT-BUG-2456339

REDHAT-BUG-2456339

Published Apr 8, 2026

Updated

During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls.

Affected Software

2 affected components

go crypto/x509

go crypto/tls

Event History

Apr 8, 2026

Data Sourced

via Red Hat·02:01 AM

DescriptionSeverityAffected Software

Frequently Asked Questions

What is the severity of REDHAT-BUG-2456339?

The severity of REDHAT-BUG-2456339 is classified as a denial of service vulnerability.

How do I fix REDHAT-BUG-2456339?

To fix REDHAT-BUG-2456339, ensure that your implementation of crypto/x509 and crypto/tls is updated to the latest patched version.

What software is affected by REDHAT-BUG-2456339?

REDHAT-BUG-2456339 affects the Go libraries crypto/x509 and crypto/tls.

What type of vulnerability is REDHAT-BUG-2456339?

REDHAT-BUG-2456339 is a denial of service vulnerability caused by improper limitations during chain building.

Who can be impacted by REDHAT-BUG-2456339?

Direct users of the Go crypto/x509 and crypto/tls libraries can be impacted by REDHAT-BUG-2456339.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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