diff options
author | Bodo Möller <bodo@openssl.org> | 2012-10-05 20:51:12 +0000 |
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committer | Bodo Möller <bodo@openssl.org> | 2012-10-05 20:51:12 +0000 |
commit | 09ef5f62582ddcda54d5cd639669f66fed381f6e (patch) | |
tree | ea789102f04717b29c48036687b9a6ffe935706b /crypto/ecdsa | |
parent | bcc0e4ca7c653f374da7c17f30c32922fa55c358 (diff) |
Fix EC_KEY initialization race.
Submitted by: Adam Langley
Diffstat (limited to 'crypto/ecdsa')
-rw-r--r-- | crypto/ecdsa/ecs_lib.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/crypto/ecdsa/ecs_lib.c b/crypto/ecdsa/ecs_lib.c index e477da430b..814a6bf404 100644 --- a/crypto/ecdsa/ecs_lib.c +++ b/crypto/ecdsa/ecs_lib.c @@ -200,8 +200,15 @@ ECDSA_DATA *ecdsa_check(EC_KEY *key) ecdsa_data = (ECDSA_DATA *)ecdsa_data_new(); if (ecdsa_data == NULL) return NULL; - EC_KEY_insert_key_method_data(key, (void *)ecdsa_data, - ecdsa_data_dup, ecdsa_data_free, ecdsa_data_free); + data = EC_KEY_insert_key_method_data(key, (void *)ecdsa_data, + ecdsa_data_dup, ecdsa_data_free, ecdsa_data_free); + if (data != NULL) + { + /* Another thread raced us to install the key_method + * data and won. */ + ecdsa_data_free(ecdsa_data); + ecdsa_data = (ECDSA_DATA *)data; + } } else ecdsa_data = (ECDSA_DATA *)data; |