pkcs15-prkey: Avoid memory leak
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16625
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@ -258,6 +258,13 @@ int sc_pkcs15_decode_prkdf_entry(struct sc_pkcs15_card *p15card,
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memset(gostr3410_params, 0, sizeof(gostr3410_params));
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r = sc_asn1_decode_choice(ctx, asn1_prkey, *buf, *buflen, buf, buflen);
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if (r < 0) {
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/* This might have allocated something. If so, clear it now */
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if (asn1_com_prkey_attr->flags & SC_ASN1_PRESENT &&
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asn1_com_prkey_attr[0].flags & SC_ASN1_PRESENT) {
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free(asn1_com_prkey_attr[0].parm);
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}
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}
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if (r == SC_ERROR_ASN1_END_OF_CONTENTS)
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return r;
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LOG_TEST_RET(ctx, r, "PrKey DF ASN.1 decoding failed");
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