GO-2026-5298 Go-Attestation: Hash injection into trusted measurement list via unskipped SignatureHeaderSize vendor bytes in parseEfiSignatureList() in github.com/google/go-attestation

Go-Attestation: Hash injection into trusted measurement list via unskipped SignatureHeaderSize vendor bytes in parseEfiSignatureList in github.com/google/go-attestation...

CVE-2026-12681

Summary: CVE-2026-12681 affects Google go-attestation prior to 0.6.1. The issue arises in parseEfiSignatureList(): the buffer is not advanced past vendor bytes before reading entries, enabling attacker-controlled vendor header bytes to be appended to the trusted SHA256 hash list. A crafted TPM ev...

CVE-2026-12681

Improper Validation of Specified Index, Position, or Offset in Input vulnerability in Google go-attestation. parseEfiSignatureList does not advance the buffer past vendor bytes before reading entries. For hashSHA256SigGUID lists, this allows attacker-controlled vendor header bytes to be appended ...