Azure IMDS attested data signatures can now chain through
Microsoft TLS G2 RSA CA OCSP intermediates, then through the
cross-signed Microsoft TLS RSA Root G2 certificate, before reaching
DigiCert Global Root G2.
coderd did not bundle the new G2 OCSP intermediates or the
cross-signed Microsoft TLS RSA Root G2 bridge certificate, so it could
fail to build a trusted chain for affected IMDS signatures.
Related to:
https://linear.app/codercom/issue/PLAT-205/bug-azure-instance-identity-verification-is-broken