add a length check to the return value of function i2d_ASN1_TYPE. Return an error instead of trying to malloc a negative number.
CLA: trivial
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14828)
t.type = str->type;
t.value.ptr = (char *)str;
der_len = i2d_ASN1_TYPE(&t, NULL);
+ if (der_len <= 0)
+ return -1;
if ((der_buf = OPENSSL_malloc(der_len)) == NULL) {
ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
return -1;