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rsa: add check after calling BN_BLINDING_lock

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As the potential failure of getting lock, we need to check the return
value of the BN_BLINDING_lock() in order to avoid the dirty data.

Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17642)
This commit is contained in:
Jiasheng Jiang 2022-02-05 18:00:51 +08:00 committed by Tomas Mraz
parent 14db620282
commit aefbcde291
1 changed files with 3 additions and 1 deletions
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4
crypto/rsa/rsa_ossl.c
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@ -213,7 +213,9 @@ static int rsa_blinding_convert(BN_BLINDING *b, BIGNUM *f, BIGNUM *unblind,
*/
int ret;
BN_BLINDING_lock(b);
if (!BN_BLINDING_lock(b))
return 0;
ret = BN_BLINDING_convert_ex(f, unblind, b, ctx);
BN_BLINDING_unlock(b);