diff options
| author | Bodo Möller <bodo@openssl.org> | 2012-10-05 20:51:47 +0000 |
|---|---|---|
| committer | Bodo Möller <bodo@openssl.org> | 2012-10-05 20:51:47 +0000 |
| commit | 75f0bc4f44f34450892a243e3747a6d3214925ed (patch) | |
| tree | 88e4d7127aaf7c79b4b4bd5d6ed68dabc711a1f9 /crypto/ecdh | |
| parent | 71a2440ee59567edea2cf14c000f3ca9e933953c (diff) | |
Fix EC_KEY initialization race.
Submitted by: Adam Langley
Diffstat (limited to 'crypto/ecdh')
| -rw-r--r-- | crypto/ecdh/ech_lib.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/crypto/ecdh/ech_lib.c b/crypto/ecdh/ech_lib.c index bf22234778..f9ba5fb57c 100644 --- a/crypto/ecdh/ech_lib.c +++ b/crypto/ecdh/ech_lib.c @@ -205,8 +205,15 @@ ECDH_DATA *ecdh_check(EC_KEY *key) ecdh_data = (ECDH_DATA *)ecdh_data_new(); if (ecdh_data == NULL) return NULL; - EC_KEY_insert_key_method_data(key, (void *)ecdh_data, - ecdh_data_dup, ecdh_data_free, ecdh_data_free); + data = EC_KEY_insert_key_method_data(key, (void *)ecdh_data, + ecdh_data_dup, ecdh_data_free, ecdh_data_free); + if (data != NULL) + { + /* Another thread raced us to install the key_method + * data and won. */ + ecdh_data_free(ecdh_data); + ecdh_data = (ECDH_DATA *)data; + } } else ecdh_data = (ECDH_DATA *)data; |