1 files changed, 2 insertions, 0 deletions

diff --git a/src/lib/libcrypto/asn1/asn_mime.c b/src/lib/libcrypto/asn1/asn_mime.c
index fe7c4ec7ab..bc80b20d63 100644
--- a/src/lib/libcrypto/asn1/asn_mime.c
+++ b/src/lib/libcrypto/asn1/asn_mime.c
@@ -526,6 +526,8 @@ int SMIME_text(BIO *in, BIO *out)
         sk_MIME_HEADER_pop_free(headers, mime_hdr_free);
         while ((len = BIO_read(in, iobuf, sizeof(iobuf))) > 0)
                                                 BIO_write(out, iobuf, len);
+        if (len < 0)
+                return 0;
         return 1;
 }