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-rw-r--r--crypto/asn1/bio_ndef.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/crypto/asn1/bio_ndef.c b/crypto/asn1/bio_ndef.c
index 6222c99074..5642262719 100644
--- a/crypto/asn1/bio_ndef.c
+++ b/crypto/asn1/bio_ndef.c
@@ -113,6 +113,8 @@ static int ndef_prefix(BIO *b, unsigned char **pbuf, int *plen, void *parg)
ndef_aux = *(NDEF_SUPPORT **)parg;
derlen = ASN1_item_ndef_i2d(ndef_aux->val, NULL, ndef_aux->it);
+ if (derlen < 0)
+ return 0;
if ((p = OPENSSL_malloc(derlen)) == NULL) {
ASN1err(ASN1_F_NDEF_PREFIX, ERR_R_MALLOC_FAILURE);
return 0;