CVE-2026-12681
Description
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 to the trusted SHA256 hash list. A crafted TPM event log could inject arbitrary SHA256 hashes into the verifier's trusted measurement database, enabling a remote attestation verifier to accept a compromised boot state. This issue affects go-attestation: through 0.6.0.
How to fix
- github.com/google/go-attestation0.6.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/google/go-attestationGo | v < 0.6.1, No range specified | 0.6.1 |
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