1 files changed, 5 insertions, 1 deletions

diff --git a/src/lib/libcrypto/pkcs7/pk7_lib.c b/src/lib/libcrypto/pkcs7/pk7_lib.c
index 9ade3df552..58e5c88a5e 100644
--- a/src/lib/libcrypto/pkcs7/pk7_lib.c
+++ b/src/lib/libcrypto/pkcs7/pk7_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: pk7_lib.c,v 1.32 2026/08/30 16:52:56 tb Exp $ */
+/* $OpenBSD: pk7_lib.c,v 1.33 2026/08/30 16:56:45 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -680,6 +680,10 @@ PKCS7_stream(unsigned char ***boundary, PKCS7 *p7)
                         PKCS7error(PKCS7_R_NO_CONTENT);
                         break;
                 }
+                if (!PKCS7_type_is_data(p7->d.sign->contents)) {
+                        PKCS7error(PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
+                        break;
+                }
                 os = p7->d.sign->contents->d.data;
                 break;