Panic when validating certificates with DSA public keys in crypto/x509

GO-2025-4013 · BIT-golang-2025-58188 · CVE-2025-58188

Published Oct 29, 2025 · Modified May 15, 2026

Description

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.

References

FIX https://go.dev/cl/709853
REPORT https://go.dev/issue/75675
WEB https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bI

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