From: Dr. David von Oheimb <David.von.Oheimb@siemens.com>
Date: Thu, 25 May 2023 15:48:04 +0000 (+0200)
Subject: SMIME_crlf_copy(): check for NULL pointer arguments
X-Git-Tag: openssl-3.1.2~80
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=84025cf423693db3af4a6667d415424c669f0c79;p=thirdparty%2Fopenssl.git

SMIME_crlf_copy(): check for NULL pointer arguments

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/21058)

(cherry picked from commit 23450cfb9204615e97467e8be6a709141523a59e)
---

diff --git a/crypto/asn1/asn_mime.c b/crypto/asn1/asn_mime.c
index b44b0f36858..7ab7bc87ed9 100644
--- a/crypto/asn1/asn_mime.c
+++ b/crypto/asn1/asn_mime.c
@@ -516,6 +516,12 @@ int SMIME_crlf_copy(BIO *in, BIO *out, int flags)
     int len;
     char linebuf[MAX_SMLEN];
     int ret;
+
+    if (in == NULL || out == NULL) {
+        ERR_raise(ERR_LIB_ASN1, ERR_R_PASSED_NULL_PARAMETER);
+        return 0;
+    }
+
     /*
      * Buffer output so we don't write one line at a time. This is useful
      * when streaming as we don't end up with one OCTET STRING per line.