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check the return value of BN_dup() in rsa_lib.c:1248 

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17168)

(cherry picked from commit 9d1a27051d)
This commit is contained in:
x2018 2021-11-30 20:33:32 +08:00 committed by Tomas Mraz
parent 8a1ff913be
commit 54cb418400
1 changed files with 4 additions and 1 deletions
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5
crypto/rsa/rsa_lib.c
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@ -1244,8 +1244,11 @@ int EVP_PKEY_CTX_set1_rsa_keygen_pubexp(EVP_PKEY_CTX *ctx, BIGNUM *pubexp)
* When we're dealing with a provider, there's no need to duplicate * When we're dealing with a provider, there's no need to duplicate
* pubexp, as it gets copied when transforming to an OSSL_PARAM anyway. * pubexp, as it gets copied when transforming to an OSSL_PARAM anyway.
*/ */
if (evp_pkey_ctx_is_legacy(ctx)) if (evp_pkey_ctx_is_legacy(ctx)) {
pubexp = BN_dup(pubexp); pubexp = BN_dup(pubexp);
if (pubexp == NULL)
return 0;
}
ret = EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_KEYGEN, ret = EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_KEYGEN,
EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, 0, pubexp); EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, 0, pubexp);
if (evp_pkey_ctx_is_legacy(ctx) && ret <= 0) if (evp_pkey_ctx_is_legacy(ctx) && ret <= 0)