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Stop transactions from being reentrant

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We want to explicitly disallow creating new transactions when a
transaction is already in progress. However, we were incorrectly
checking for the existence of the injected entropy file before
continuing with creating a transaction. This meant we could have a
transaction already in progress and would be able to still create a new
transaction. It also meant we couldn't start a new transaction if any
entropy had been injected. Check the transaction file instead of the
injected entropy file in order to prevent multiple concurrent
transactions.
This commit is contained in:
Jaeden Amero 2019-10-28 15:25:10 +00:00
parent b1c7197166
commit 2ce22a5079
1 changed files with 1 additions and 1 deletions
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2
library/psa_crypto_storage.c
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@ -419,7 +419,7 @@ psa_status_t psa_crypto_save_transaction( void )
{
struct psa_storage_info_t p_info;
psa_status_t status;
status = psa_its_get_info( PSA_CRYPTO_ITS_RANDOM_SEED_UID, &p_info );
status = psa_its_get_info( PSA_CRYPTO_ITS_TRANSACTION_UID, &p_info );
if( status == PSA_SUCCESS )
{
/* This shouldn't happen: we're trying to start a transaction while