Research / Finding
fix(crypto): add missing memzero to `ecdsa.c`
F-TREZOR-CRYPTO-MEMZERO-001
Public snapshot: 26 Sep 2026. Status, releases and attribution belong to each source below; none is inferred from another record.
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Recorded evidence
—score not recorded
fix(crypto): add missing memzero to `ecdsa.c`
merged
details
- Finding IDs
- F-TREZOR-CRYPTO-MEMZERO-001
- Status
- merged
- Reported via
- security contact
- Note
- public fix commit bddd38b47d92 clears tc_ecdsa_sign_digest secret material on error returns. F-TREZOR-CRYPTO-MEMZERO-004 is an alternate report ID for the same fix, not a separate counted finding.
F-TREZOR-CRYPTO-MEMZERO-001: Secret handling. Sensitive cryptographic buffers are not cleared on the affected path. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.
Mechanism source for F-TREZOR-CRYPTO-MEMZERO-001
Security area (1seal assessment): Confidentiality. Sensitive cryptographic buffers are not cleared on the affected path. Reviewed 24 Sep 2026.
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