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pkcs15-prkey: Avoid memory leak 

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16625
This commit is contained in:
Jakub Jelen 2019-10-16 10:39:20 +02:00 committed by Frank Morgner
parent 62049ea18c
commit 630d6adf32
1 changed files with 7 additions and 0 deletions
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7
src/libopensc/pkcs15-prkey.c
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@ -258,6 +258,13 @@ int sc_pkcs15_decode_prkdf_entry(struct sc_pkcs15_card *p15card,
memset(gostr3410_params, 0, sizeof(gostr3410_params));
r = sc_asn1_decode_choice(ctx, asn1_prkey, *buf, *buflen, buf, buflen);
if (r < 0) {
/* This might have allocated something. If so, clear it now */
if (asn1_com_prkey_attr->flags & SC_ASN1_PRESENT &&
asn1_com_prkey_attr[0].flags & SC_ASN1_PRESENT) {
free(asn1_com_prkey_attr[0].parm);
}
}
if (r == SC_ERROR_ASN1_END_OF_CONTENTS)
return r;
LOG_TEST_RET(ctx, r, "PrKey DF ASN.1 decoding failed");