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Blockstream Jade

Firmware for Jade and Jade Plus Bitcoin hardware wallets.

BitcoinHardware walletsElevated watch
Repository coverage

414 commits in the local evidence base

Every captured commit receives deterministic security triage and a separate communication-quality score. Security candidates and broader second-pass signals receive full-patch Ollama analysis.

93security candidates58second-pass queue57AI analyses
10commits · 30 days
67commits · 60 days
198commits · 180 days
414commits · 365 days
Backfill bands
Aug 5 → Feb 6216 seen38 candidatesComplete
Feb 6 → Jun 6131 seen9 candidatesComplete
Jun 6 → Jul 657 seen10 candidatesComplete
Jul 6 → Aug 510 seen0 candidatesComplete
Commit communication

Does the history explain itself?

Message quality measures whether a commit identifies its scope, purpose, rationale, testing, and supporting references. It does not change the security-severity score.

57/100 average clarity
32Strong · 80–100
147Adequate · 60–79
203Thin · 40–59
32Opaque · 0–39
3security candidates with opaque commit messaging
Read the scoring rubric →
Developer activity

Who is changing the project?

Public Git author strings; identities are not independently verified.

DeveloperCommitsCandidatesAnalyzedHigh riskMessage avg.
Jon Griffiths2755232157
Mike Tolkachev311110155
Daniel Newton65155055
Mihailo Milenkovic877057
Jamie C. Driver522053
Gustavo Cateim710079
Austin-Fulbright410060
roderico110045
quantpoet110072
tokyovyse110063
cmiguelrn111045
odudex200071
Analysis record

Published AI watches

Last scanned 0 minutes ago

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
No security note in commit
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
No security note in commit
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
No security note in commit
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
No security note in commit
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
No security note in commit
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
No security note in commit
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
No security note in commit
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
No security note in commit
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
No security note in commit
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
No security note in commit
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
Vendor flagged security relevance
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
No security note in commit
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
Vendor flagged security relevance
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
No security note in commit
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
No security note in commit
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
No security note in commit
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
No security note in commit
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
No security note in commit
Informational 20 AI analysisMessage 73 · Adequate
BS BlockstreamBlockstream Jade BitcoinHardware wallets

ui: add a better UI for index selection vs PIN entry

This commit is a user-interface refactor for the Blockstream Jade hardware wallet. It replaces a PIN-only digit-entry screen with a shared 'digit entry' widget that can also accept shorter numeric indices (for things like BIP85 child mnemo…

UI-only refactor with no change to PIN size, PIN validation, key derivation, or storageNew index-entry mode allows shorter numeric input, bounded by existing caller-side maximum checksNo buffer size changes: arrays remain DIGIT_ENTRY_SIZE (6) bytes
c78995b6by Daniel Newton+422−3829 files
No security note in commit
Informational 5 AI analysisMessage 75 · Adequate
BS BlockstreamBlockstream Jade BitcoinHardware wallets

tests: add green 2of3 recovery signing by recovery key (full path from master key)

This commit only adds a new test case and updates a description of an existing test. It does not change any production code. The new test documents that when a recovery key is provided with a full derivation path (from the master key), a B…

Test-only change: no production code modifiedNew test description notes that Green 2of3 validation is skipped when full master-key derivation path is usedExisting test description clarified to distinguish 'last hardened parent' vs 'full path' recovery-key derivation
6779fc7aby Mihailo Milenkovic+11−12 files
No security note in commit
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Explore captured commits

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Security candidateLiquid (taproot): add sign_liquid_tx genesis blockhash supportby Jon Griffiths · 888eff30 · Jun 29, 2026 · 4 filesMessage 95 · StrongLow 42Details
Commit message · Jon Griffiths

Liquid (taproot): add sign_liquid_tx genesis blockhash support

Allow providing the genesis blockhash for sign_liquid_tx in
addition to the already existing sign_psbt support for PSET.

For test networks, do not require that the provided genesis blockhash
matches the network genesis blockhash. This allows signing for e.g.
custom regtest environments. Ensure that test network signing cannot
use the mainnet genesis blockhash in order to prevent spoofing.

Suggested-by: topologoanatom <survisysy@gmail.com>

95/100 · StrongMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Provides detailed explanatory context✓ Explains rationale or failure mode✓ Mentions testing or verification
Why it was queued
signing boundarysigning or wallet path
AI analysis · Low 42/100

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 networks (like regtest), but blocks attempts to use the real Liquid mainnet genesis hash on test networks to prevent spoofing. The change also applies the same validation to both PSBT/PSET signing and raw transaction signing. It appears to be a hardening/feature addition rather than a fix for an active exploit, but it does close a spoofing path on test networks.

Security candidaterpc: rename get_boolean to get_boolby Jon Griffiths · f6e946ac · Jun 25, 2026 · 18 filesMessage 45 · ThinInformational 15Details
Commit message · Jon Griffiths

rpc: rename get_boolean to get_bool

45/100 · ThinMessage clarity
✓ Descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
Why it was queued
signing or wallet pathboot or update pathauthentication path
AI analysis · Informational 15/100

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 no security relevance.

Security candidaterpc: refactor app code to use getters with default valuesby Mike Tolkachev · b6a07147 · Jun 25, 2026 · 8 filesMessage 50 · ThinInformational 15Details
Commit message · Mike Tolkachev

rpc: refactor app code to use getters with default values

50/100 · ThinMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
Why it was queued
signing or wallet pathboot or update pathauthentication path
AI analysis · Informational 15/100

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 visible in the diff.

Security candidatebuild: annotate functions returning error codes to ensure they are checkedby Mike Tolkachev · 909a89aa · Jun 23, 2026 · 25 filesMessage 74 · AdequateLow 36Details
Commit message · Mike Tolkachev

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

74/100 · AdequateMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Explains rationale or failure mode! No meaningful explanatory body
Why it was queued
cryptography-sensitive pathsigning or wallet pathboot or update pathauthentication pathparser or protocol path
AI analysis · Low 36/100

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 future bugs where an error return is silently dropped, but the commit itself does not fix any specific known bug or change runtime behavior.

Security candidatepsbt: fix path sizeby Mike Tolkachev · 9e0c3747 · Jun 23, 2026 · 1 fileMessage 28 · OpaqueLow 42Details
Commit message · Mike Tolkachev

psbt: fix path size

28/100 · OpaqueMessage clarity
✓ Subject identifies a change! No meaningful explanatory body! Opaque security-relevant change
Why it was queued
signing boundarysigning or wallet path
AI analysis · Low 42/100

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 the underlying library interprets that value, this could lead to reading truncated paths, rejecting valid transactions, or possibly reading past the intended buffer. It is a defensive fix in security-sensitive parsing code, but the commit itself does not claim a specific exploitable vulnerability.

Security candidatesign_psbt: add early reject on wrong genesis blockhashby Mike Tolkachev · 56e130b0 · Jun 23, 2026 · 1 fileMessage 50 · ThinModerate 59Details
Commit message · Mike Tolkachev

sign_psbt: add early reject on wrong genesis blockhash

50/100 · ThinMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
Why it was queued
signing boundarysigning or wallet path
AI analysis · Moderate 59/100

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 message but accidentally continued processing instead of stopping. This one-line fix adds the missing 'return' so the device rejects mismatched transactions immediately. Without the fix, a user could potentially be tricked into signing a transaction on the wrong network, which might lead to loss of funds or confusion between mainnet and testnet/signet assets.

Security candidatemain: fix error handling during PIN changeby Mike Tolkachev · 64c30823 · Jun 23, 2026 · 1 fileMessage 45 · ThinLow 42Details
Commit message · Mike Tolkachev

main: fix error handling during PIN change

45/100 · ThinMessage clarity
✓ Descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
Why it was queued
access controlauthentication path
AI analysis · Low 42/100

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. Instead, it could fall through and continue executing subsequent code paths that were meant to be skipped. This could lead to incorrect state handling, potential use of stale or invalid key material, or confusing behavior after a failed PIN change. The fix adds explicit 'goto cleanup' statements so the function exits the sensitive section safely in both error and abandonment cases.

Security candidateattestation: fix missing cleanup on failed efuse writeby Mike Tolkachev · d37d88b7 · Jun 23, 2026 · 1 fileMessage 50 · ThinLow 39Details
Commit message · Mike Tolkachev

attestation: fix missing cleanup on failed efuse write

50/100 · ThinMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
Why it was queued
update trustboot or update path
AI analysis · Low 39/100

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 memory or undoing earlier setup steps. The fix makes it jump to a cleanup routine instead. The direct risk is mainly a resource leak or partial initialization state on a rare hardware failure, not an obvious remote attack.

Security candidateattestation: harden error handling of challenge signingby Mike Tolkachev · ecc5871b · Jun 23, 2026 · 1 fileMessage 50 · ThinModerate 59Details
Commit message · Mike Tolkachev

attestation: harden error handling of challenge signing

50/100 · ThinMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
Why it was queued
signing boundaryupdate trustdefensive validationsigning or wallet pathboot or update path
AI analysis · Moderate 59/100

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 function anyway, potentially sending an invalid or uninitialized reply back to the caller. The fix ensures the function stops immediately after reporting the error.

Security candidatewallet: fix unhandled wrong asset in wallet summariesby Mike Tolkachev · b33cf02b · Jun 9, 2026 · 3 filesMessage 77 · AdequateModerate 59Details
Commit message · Mike Tolkachev

wallet: fix unhandled wrong asset in wallet summaries

Verifies that asset_summary_update returns true, otherwise aborts
transaction or PSBT processing with error.

77/100 · AdequateMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Provides an explanatory body✓ Explains rationale or failure mode
Why it was queued
signing boundarysigning or wallet path
AI analysis · Moderate 59/100

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 transaction inputs and outputs, the wallet ignored the failure and continued signing. The patch now checks the function's return value and aborts signing with an error. This could have allowed a malicious or malformed transaction to bypass the wallet's balance checks, potentially misleading the user about what assets were actually being moved.

Security candidatesign: update output logic, rename and document output flags for clarityby Mike Tolkachev · cf79a3aa · May 16, 2026 · 5 filesMessage 85 · StrongModerate 59Details
Commit message · Mike Tolkachev

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

Re-fixes change output marking so that it is only ever set if the
output is also marked as a wallet output. Downstream code can thus
check the change bit alone to determine wallet change.

85/100 · StrongMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Provides detailed explanatory context✓ Explains rationale or failure mode
Why it was queued
signing boundarysigning or wallet path
AI analysis · Moderate 59/100

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, downstream code had to check both 'validated' and 'change' bits to safely hide a change output; now it can rely on the 'change' bit alone. The commit also renames the flag from VALIDATED to IS_OURS and adds comments. The stated intent is to prevent a change output from being marked as change unless it is also confirmed as a wallet output, which could reduce the risk of an attacker tricking the device into hiding a payment to an external address.

Security candidateesp-idf: update to v5.5.4, take multisig bootloader component from https://github.com/Blockstream/esp-idf/tree/securebootv2_multisig_v5.5.4by Daniel Newton · d931d543 · May 15, 2026 · 104 filesMessage 58 · ThinModerate 57Details
Commit message · Daniel Newton

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

58/100 · ThinMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Links an issue, advisory, or supporting reference! No meaningful explanatory body
Why it was queued
update trustcryptography-sensitive pathseed or entropy pathsigning or wallet pathboot or update path
AI analysis · Moderate 57/100

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 new Trusted Execution Environment (TEE) mode. There are also several security-hardening touches, such as preventing the TEE from writing or erasing its own active flash partition and adding anti-fault-injection checks. However, the commit is a broad vendor SDK refresh rather than a single focused security fix, and the diff provided is only a partial sample of the whole change.

Security candidatesign_tx: suppress validation/change attribution for green 2of3 outputsby Mike Tolkachev · 0243f239 · May 15, 2026 · 1 fileMessage 85 · StrongHigh 72Details
Commit message · Mike Tolkachev

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

Since the recovery xpub is not currently registered on-device, we should
not trust the caller provided value, and users must validate the address
on-device. A malicious companion app could otherwise swap out the
recovery xpub to grief the user.

This brings sign_tx behaviour in line with sign_psbt for Green 2of3.

A future update will allow user-confirmed registration for Green 2of3
which will allow skipping the confirmation for these outputs.

85/100 · StrongMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Provides detailed explanatory context✓ Explains rationale or failure mode
Why it was queued
signing boundarydefensive validationsigning or wallet path
AI analysis · High 72/100

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 output as 'change' going back to the user's own wallet. A malicious or compromised companion app could have supplied a fake recovery key, tricking the device into marking a payment to an attacker's address as safe internal change. The fix forces the user to manually verify such outputs on the device screen instead of trusting the app, matching the behavior already used for PSBT signing.

Security candidateui: tidy up message/error activitiesby Daniel Newton · 1914ace0 · May 4, 2026 · 25 filesMessage 45 · ThinInformational 15Details
Commit message · Daniel Newton

ui: tidy up message/error activities

Fix spelling of "re-encrypt".

45/100 · ThinMessage clarity
✓ Descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
Why it was queued
seed or entropy pathsigning or wallet pathboot or update pathauthentication path
AI analysis · Informational 15/100

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 logic, no bug fix, and no vulnerability addressed.

Security candidatewire: reduce stack usage sending repliesby Jon Griffiths · c41f5fdd · May 1, 2026 · 29 filesMessage 60 · AdequateLow 25Details
Commit message · Jon Griffiths

wire: reduce stack usage sending replies

This offsets the increased stack usage from the previous commit.

60/100 · AdequateMessage clarity
✓ Descriptive subject✓ Names a concrete action or component✓ Provides an explanatory body
Why it was queued
seed or entropy pathsigning or wallet pathboot or update pathauthentication path
AI analysis · Low 25/100

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 goal is to reduce stack memory usage. There is no direct evidence in the commit that this fixes an exploitable vulnerability, but reducing stack pressure can help prevent stack overflow crashes or corruption in a security-critical embedded device.

Security candidaterpc: add show_bip85_bip39_entropy RPC commandby Daniel Newton · 3392661c · Apr 19, 2026 · 7 filesMessage 45 · ThinInformational 24Details
Commit message · Daniel Newton

rpc: add show_bip85_bip39_entropy RPC command

45/100 · ThinMessage clarity
✓ Descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
Why it was queued
entropy or randomnesssecret or key materialseed or entropy path
AI analysis · Informational 24/100

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 several places, fixing a place where an out-of-range index was accepted. There is no direct evidence in the diff of a vulnerability being exploited, but the new QR-display path and the tightened validation are security-relevant.

Security candidatepsbt: always confirm green outputs when recovery signingby Jon Griffiths · a963f628 · Apr 16, 2026 · 1 fileMessage 50 · ThinModerate 57Details
Commit message · Jon Griffiths

psbt: always confirm green outputs when recovery signing

50/100 · ThinMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
Why it was queued
signing boundarysigning or wallet path
AI analysis · Moderate 57/100

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 silently trusting them. Previously, the code skipped confirmation if Jade detected it was the recovery key and the output matched a Green script. The change flips the condition: now, if Jade is the recovery key OR the script does not match Green's expected pattern, the output must be confirmed. This is a defensive fix to prevent a compromised companion app or host from sneaking an unverified output past the user during recovery signing.

Security candidateattestation: ensure attestation provision signature is correctly sizedby Jon Griffiths · b6ca54db · Apr 14, 2026 · 1 fileMessage 78 · AdequateModerate 58Details
Commit message · Jon Griffiths

attestation: ensure attestation provision signature is correctly sized

Suggested-by: Jordan Mecom (@jmecom) via https://github.com/jmecom/odo

78/100 · AdequateMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Provides an explanatory body✓ Links an issue, advisory, or supporting reference✓ Names security-relevant behavior explicitly
Why it was queued
signing boundaryupdate trustboot or update path
AI analysis · Moderate 58/100

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 could overflow that buffer during verification, potentially corrupting memory or crashing the device. The patch adds a size check before calling the signature verification routine.

Security candidateui: add a better UI for index selection vs PIN entryby Daniel Newton · c78995b6 · Mar 13, 2026 · 9 filesMessage 73 · AdequateInformational 20Details
Commit message · Daniel Newton

ui: add a better UI for index selection vs PIN entry

Allow entering just the number required when entering indices rather
than having to populate all digits including leading zeros.

73/100 · AdequateMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Provides detailed explanatory context
Why it was queued
access controlauthentication path
AI analysis · Informational 20/100

This commit is a user-interface refactor for the Blockstream Jade hardware wallet. It replaces a PIN-only digit-entry screen with a shared 'digit entry' widget that can also accept shorter numeric indices (for things like BIP85 child mnemonic indexes or account indexes). The PIN entry behavior itself is preserved: PINs still require all six digits. The main functional change is that index entry can now be shorter than six digits, which is a usability improvement rather than a security fix. There is no vendor statement that this change addresses a security vulnerability.

Security candidatetests: add green 2of3 recovery signing by recovery key (full path from master key)by Mihailo Milenkovic · 6779fc7a · Feb 2, 2026 · 2 filesMessage 75 · AdequateInformational 5Details
Commit message · Mihailo Milenkovic

tests: add green 2of3 recovery signing by recovery key (full path from master key)

Test case for the situation described in the previous commit, showing
that the transaction is correctly signed.

75/100 · AdequateMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Provides an explanatory body✓ Mentions testing or verification
Why it was queued
signing boundarysigning or wallet path
AI analysis · Informational 5/100

This commit only adds a new test case and updates a description of an existing test. It does not change any production code. The new test documents that when a recovery key is provided with a full derivation path (from the master key), a Blockstream Jade device will still sign the transaction, but a helper function called is_green_multisig_signers() will return false, meaning some extra Green 2of3 validation is skipped. Because no actual signing logic is changed, this commit by itself is not a security fix or vulnerability.

Security candidatesign_psbt: add 2of3 recovery path comment for is_green_multisig_signersby Mihailo Milenkovic · 34f3d162 · Feb 2, 2026 · 1 fileMessage 50 · ThinInformational 15Details
Commit message · Mihailo Milenkovic

sign_psbt: add 2of3 recovery path comment for is_green_multisig_signers

50/100 · ThinMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
Why it was queued
signing boundarysigning or wallet path
AI analysis · Informational 15/100

This commit only adds a code comment explaining an existing limitation in how Blockstream Jade detects Green multisignature transactions. No code behavior changes. The comment documents that for a specific 2-of-3 recovery wallet setup, the device may skip extra Green-specific validation and fall back to treating the transaction as a standard 2-of-3 multisig, but signing still works correctly.

Security candidateattestation: misc cleanupsby Jon Griffiths · 4d782bf8 · Feb 2, 2026 · 1 fileMessage 75 · AdequateLow 42Details
Commit message · Jon Griffiths

attestation: misc cleanups

- fix SENSITIVE_POP in attestation_initialise()
- fix attestation_can_be_initialised() with CONFIG_DEBUG_MODE
- avoid uneeded reloads of attestation data
- ensure keys are always initialized before being freed
- allocate attestation data on the heap to avoid stack overflow

Co-authored-by: Daniel Newton <dnewton@blockstream.com>

75/100 · AdequateMessage clarity
✓ Descriptive subject✓ Provides detailed explanatory context✓ Explains rationale or failure mode✓ Names security-relevant behavior explicitly
Why it was queued
update trustmemory safetyboot or update path
AI analysis · Low 42/100

This commit is a cleanup of the device attestation code in Blockstream Jade, which is the cryptographic proof that the device is genuine. The changes fix a memory-management bug where sensitive key data could be cleared in the wrong order, correct a logic issue when debug mode is enabled, avoid repeatedly reloading attestation data from storage, ensure cryptographic keys are initialized before being freed, and move a large attestation data structure from the stack to the heap to prevent a possible stack overflow. Most changes are defensive hardening, but the SENSITIVE_POP ordering and the debug-mode logic fix are genuine security-relevant corrections.

Security candidatetests: add test for a green 2of3 psbt with jade as the recovery key signerby Mihailo Milenkovic · 2d9c0a4c · Feb 2, 2026 · 1 fileMessage 60 · AdequateInformational 15Details
Commit message · Mihailo Milenkovic

tests: add test for a green 2of3 psbt with jade as the recovery key signer

60/100 · AdequateMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Mentions testing or verification! No meaningful explanatory body
Why it was queued
signing boundarysigning or wallet path
AI analysis · Informational 15/100

This commit only adds a new test data file containing a sample Bitcoin transaction (PSBT) for a multi-signature wallet scenario. It does not change any actual wallet code, cryptography, or security logic. There is no indication of a vulnerability or security fix.

Security candidateattestation: add status, battery charging/volts to 'get_version_info' RPCby Daniel Newton · cc3fb705 · Feb 2, 2026 · 5 filesMessage 50 · ThinInformational 13Details
Commit message · Daniel Newton

attestation: add status, battery charging/volts to 'get_version_info' RPC

50/100 · ThinMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
Why it was queued
update trustboot or update path
AI analysis · Informational 13/100

This commit simply adds more information to an existing device status report (the 'get_version_info' RPC). It now reports whether tamper-evident attestation is active, the battery voltage, and whether the battery is charging. There is no change to security logic, access control, or cryptography. It is a routine telemetry/informational enhancement.

Security candidatewallet: allow skipping leading 'm' when converting bip32 pathsby Jon Griffiths · d64ade24 · Feb 2, 2026 · 9 filesMessage 50 · ThinInformational 18Details
Commit message · Jon Griffiths

wallet: allow skipping leading 'm' when converting bip32 paths

50/100 · ThinMessage clarity
✓ Specific, descriptive subject✓ Names a concrete action or component! No meaningful explanatory body
Why it was queued
secret or key materialsigning or wallet path
AI analysis · Informational 18/100

This commit changes a helper function that turns numeric Bitcoin key paths (like 0/1/2) into human-readable text. It adds an option to leave off the leading 'm/' so callers that only want the raw path can get it. All existing callers are updated to keep the old behavior (with the 'm/'), so there is no immediate change in behavior. It appears to be a code cleanup or preparation for a future feature rather than a fix for an active security problem.