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Blockstream

Bitcoin infrastructure company and maker of the Jade signing device.

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Security hygiene breakdown

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Researcher acknowledgement 0/100
Security process 0/100
Patch clarity 0/100
Response quality 0/100
Accountability record

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Low 27 AI analysisMessage 86 · Strong
BS BlockstreamBlockstream Jade BitcoinHardware wallets

input: release touch handles before deleting the i2c bus

This commit fixes a bug where the touchscreen driver failed to clean up internal handles when shutting down. On newer ESP-IDF firmware, this cleanup failure caused the device to panic and freeze during boot and when using the camera or QR …

Device freeze/DoS-like symptom on affected hardwareMemory leak fixedNo input validation, authentication, or cryptographic weakness visible
36776fecby Gustavo Cateim+3−01 file
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Low 42 AI analysisMessage 95 · Strong
BS BlockstreamBlockstream Jade BitcoinHardware wallets

Liquid (taproot): add sign_liquid_tx genesis blockhash support

This commit changes how Blockstream Jade handles the 'genesis blockhash' when signing Liquid transactions. Previously, the device only accepted the network's built-in genesis hash. Now it lets users provide a custom genesis hash for test n…

Adds input validation for caller-supplied genesis blockhashPrevents mainnet genesis hash from being used on Liquid test networksRestricts genesis_hash parameter to Liquid networks only
888eff30by Jon Griffiths+82−264 files
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Informational 15 AI analysisMessage 45 · Thin
BS BlockstreamBlockstream Jade BitcoinHardware wallets

rpc: rename get_boolean to get_bool

This commit is a simple rename of two internal helper functions from `rpc_get_boolean`/`rpc_get_boolean_or` to `rpc_get_bool`/`rpc_get_bool_or`, updating all call sites accordingly. There is no change to what the code does, no bug fix, and…

f6e946acby Jon Griffiths+24−2518 files
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Informational 15 AI analysisMessage 50 · Thin
BS BlockstreamBlockstream Jade BitcoinHardware wallets

rpc: refactor app code to use getters with default values

This commit is a straightforward code cleanup that replaces verbose 'read this optional value, or leave the default' patterns with shorter helper functions that do the same thing. There is no change in behavior and no security issue visibl…

b6a07147by Mike Tolkachev+22−348 files
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Low 36 AI analysisMessage 74 · Adequate
BS BlockstreamBlockstream Jade BitcoinHardware wallets

build: annotate functions returning error codes to ensure they are checked

This commit is a preventive build-hardening change. It adds compiler annotations (WARN_UNUSED_RESULT) to many functions that return success/failure codes, so the compiler will warn if a caller ignores the result. The goal is to catch futur…

Compiler annotation added to enforce checking of error-returning functionsNo specific vulnerability fixed in the diffNo functional code changes or call-site fixes included
909a89aaby Mike Tolkachev+215−15225 files
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Low 42 AI analysisMessage 28 · Opaque
BS BlockstreamBlockstream Jade BitcoinHardware wallets

psbt: fix path size

This commit fixes a small but meaningful bug in how Jade, a hardware wallet, reads key paths from Bitcoin PSBT data. The code was passing the byte size of a buffer when it should have passed the number of 32-bit entries. Depending on how t…

Buffer-size semantic mismatch in security-critical PSBT parsingUse of sizeof() on uint32_t array where element count is expectedCode path involved in 2of3 multisig recovery key identification
9e0c3747by Mike Tolkachev+2−21 file
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Moderate 59 AI analysisMessage 50 · Thin
BS BlockstreamBlockstream Jade BitcoinHardware wallets

sign_psbt: add early reject on wrong genesis blockhash

This commit fixes a bug in the Blockstream Jade hardware wallet's PSBT (Partially Signed Bitcoin Transaction) signing code. Previously, when the transaction's genesis block hash did not match the expected network, the code set an error mes…

Missing return in error path allows execution to continue after validation failureCross-network genesis hash mismatch not enforced as a hard failurePSBT signing logic accepts mismatched network parameters
56e130b0by Mike Tolkachev+1−01 file
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Low 42 AI analysisMessage 45 · Thin
BS BlockstreamBlockstream Jade BitcoinHardware wallets

main: fix error handling during PIN change

This commit fixes a bug in the PIN-change flow on Blockstream Jade hardware wallets. Previously, if re-encrypting the wallet keys with a new PIN failed, or if the user abandoned the PIN change, the code did not jump to cleanup as intended.…

Missing error-path control flow in cryptographic key handlingPotential use of stale or partially initialized key material after PIN-change failureCleanup bypass in sensitive authentication code path
64c30823by Mike Tolkachev+2−01 file
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Moderate 59 AI analysisMessage 50 · Thin
BS BlockstreamBlockstream Jade BitcoinHardware wallets

attestation: harden error handling of challenge signing

This commit fixes a bug in the Blockstream Jade hardware wallet's attestation signing process. Previously, if signing the attestation challenge failed, the device would send an error message but then continue running the rest of the functi…

Missing return after error path allows fall-through to success-path replyUninitialized output.ext_signature_len could leak stack data or cause undefined behaviorAttestation signing failure could result in sending an invalid attestation reply
ecc5871bby Mike Tolkachev+2−01 file
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Low 39 AI analysisMessage 50 · Thin
BS BlockstreamBlockstream Jade BitcoinHardware wallets

attestation: fix missing cleanup on failed efuse write

This commit fixes a small but real bug in the device attestation setup code for Blockstream Jade, a hardware crypto wallet. When a one-time programmable security fuse failed to burn, the code used to exit immediately without releasing memo…

Missing cleanup on error path in security-critical initializationResource leak on failed efuse writePotential inconsistent attestation state after partial initialization
d37d88b7by Mike Tolkachev+1−11 file
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Moderate 59 AI analysisMessage 77 · Adequate
BS BlockstreamBlockstream Jade BitcoinHardware wallets

wallet: fix unhandled wrong asset in wallet summaries

This commit fixes a bug in the Blockstream Jade hardware wallet where a function that tracks assets during transaction signing could fail silently. Previously, if an unexpected or wrong asset was encountered while building a summary of tra…

Unchecked return value from asset_summary_update() in signing pathPotential bypass of asset/balance validation during transaction signingWrong or unknown asset could be silently dropped from wallet summaries
b33cf02bby Mike Tolkachev+18−53 files
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Moderate 59 AI analysisMessage 85 · Strong
BS BlockstreamBlockstream Jade BitcoinHardware wallets

sign: update output logic, rename and document output flags for clarity

This commit reworks how a Blockstream Jade hardware wallet labels transaction outputs. The key change is that the 'change' flag is now only set when the output is also confirmed as belonging to the wallet ('is ours'). Previously, downstrea…

Change output flag now gated by wallet-ownership flagUI hides change outputs based on single bit with runtime assertionGreen 2of3 outputs no longer marked as change because not marked as wallet-owned
cf79a3aaby Mike Tolkachev+32−245 files
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Moderate 57 AI analysisMessage 58 · Thin
BS BlockstreamBlockstream Jade BitcoinHardware wallets

esp-idf: update to v5.5.4, take multisig bootloader component from https://github.com/Blockstream/esp-idf/tree/securebootv2_multisig_v5.5.4

This is a large update that pulls in Espressif's ESP-IDF v5.5.4 bootloader code, plus Blockstream's own multi-signature secure-boot patches. Most of the visible changes are routine: support for newer ESP32 chips, larger flash sizes, and a …

Anti-fault-injection assertion (ESP_FAULT_ASSERT) added around TEE flash address validationTEE flash write/erase now rejects operations targeting the active TEE partition rangeSecure Boot V2 extended to support ECDSA-P384 / SHA-384 digests
d931d543by Daniel Newton+3879−1437104 files
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High 72 AI analysisMessage 85 · Strong
BS BlockstreamBlockstream Jade BitcoinHardware wallets

sign_tx: suppress validation/change attribution for green 2of3 outputs

This update fixes a security gap in how Blockstream Jade signs Bitcoin transactions for a specific wallet type called Green 2of3. Previously, the device trusted the connected app to supply a recovery public key and might silently treat an …

Host-supplied recovery_xpub was trusted for change attributionChange output could be misattributed without user confirmationFix suppresses automatic validation for Green 2of3 outputs
0243f239by Mike Tolkachev+17−11 file
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Informational 15 AI analysisMessage 45 · Thin
BS BlockstreamBlockstream Jade BitcoinHardware wallets

ui: tidy up message/error activities

This commit is a straightforward code cleanup. It replaces a verbose way of showing on-screen messages and errors with simpler helper functions, and fixes a spelling mistake ('re-encypt' to 're-encrypt'). There is no change to security log…

No security-relevant logic changesRefactoring only: API simplification for UI message displaySpelling correction in user-facing error string
1914ace0by Daniel Newton+162−24625 files
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Low 25 AI analysisMessage 60 · Adequate
BS BlockstreamBlockstream Jade BitcoinHardware wallets

wire: reduce stack usage sending replies

This commit changes how message context is passed between functions in the Blockstream Jade hardware wallet firmware. Instead of copying the entire message context structure on the stack, functions now receive a pointer to it. The stated g…

Stack usage reduction in embedded firmwarePointer passing instead of structure copyingNo direct vulnerability described in commit message
c41f5fddby Jon Griffiths+65−6429 files
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Informational 15 AI analysisMessage 62 · Adequate
BS BlockstreamBlockstream Jade BitcoinHardware wallets

docs: add show_bip85_bip39_entropy RPC documentation

This commit only adds documentation for an existing RPC command called show_bip85_bip39_entropy. It does not change any code, so it cannot introduce or fix a security vulnerability by itself.

2e829638by Daniel Newton+37−01 file
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Informational 24 AI analysisMessage 45 · Thin
BS BlockstreamBlockstream Jade BitcoinHardware wallets

rpc: add show_bip85_bip39_entropy RPC command

This commit adds a new device command that lets a connected computer or phone ask a Blockstream Jade hardware wallet to display an encrypted BIP85 seed-entropy backup as a QR code. The change also tightens validation of the BIP32 index in …

New RPC exposes encrypted BIP85 entropy via on-device QR displayBIP32 index bounds checks added in multiple RPC parameter parsersSensitive stack buffers now marked with SENSITIVE_PUSH/POP in QR reply path
3392661cby Daniel Newton+115−277 files
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Moderate 57 AI analysisMessage 50 · Thin
BS BlockstreamBlockstream Jade BitcoinHardware wallets

psbt: always confirm green outputs when recovery signing

This commit changes the logic in Blockstream Jade's PSBT signing flow so that, when the hardware wallet is acting as a 'recovery' key for a Green 2-of-3 wallet, it always asks the user to confirm outputs that belong to Green, rather than s…

Logic inversion in authorization/confirmation pathRecovery-key signing path previously trusted Green-classified outputs without user confirmationComment explicitly frames change around inability to verify output ownership in recovery path
a963f628by Jon Griffiths+2−21 file
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Moderate 58 AI analysisMessage 78 · Adequate
BS BlockstreamBlockstream Jade BitcoinHardware wallets

attestation: ensure attestation provision signature is correctly sized

This update fixes a check in the Blockstream Jade hardware wallet's attestation setup. Before the fix, the code did not verify that an externally-provided signature was small enough to fit into its storage buffer. A too-large signature cou…

Missing length check before fixed-size buffer usePotential stack/buffer overflow in signature verification pathAttestation/trust-anchor initialization code modified
b6ca54dbby Jon Griffiths+5−71 file
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