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Engine: Add NULL check.

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Add NULL check for return from pkey_asn1_meths.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10473)
This commit is contained in:
Pauli 2019-11-20 13:07:04 +10:00
parent cff7d199e0
commit 9bada854de
1 changed files with 2 additions and 1 deletions
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3
crypto/engine/tb_asnmth.c
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@ -147,7 +147,8 @@ const EVP_PKEY_ASN1_METHOD *ENGINE_get_pkey_asn1_meth_str(ENGINE *e,
nidcount = e->pkey_asn1_meths(e, NULL, &nids, 0);
for (i = 0; i < nidcount; i++) {
e->pkey_asn1_meths(e, &ameth, NULL, nids[i]);
if (((int)strlen(ameth->pem_str) == len)
if (ameth != NULL
&& ((int)strlen(ameth->pem_str) == len)
&& strncasecmp(ameth->pem_str, str, len) == 0)
return ameth;
}