Plug memory leak in CMS_add_simple_smimecap() in the unlikely event that

ASN1_INTEGER_set() fails.

ok jsing

1 files changed, 6 insertions, 3 deletions

diff --git a/src/lib/libcrypto/cms/cms_sd.c b/src/lib/libcrypto/cms/cms_sd.c
index 95343d0887..29dbfb2d19 100644
--- a/src/lib/libcrypto/cms/cms_sd.c
+++ b/src/lib/libcrypto/cms/cms_sd.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: cms_sd.c,v 1.23 2019/08/11 14:35:57 jsing Exp $ */
+/* $OpenBSD: cms_sd.c,v 1.24 2022/08/28 18:27:47 tb Exp $ */
 /*
  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
  * project.
@@ -955,9 +955,12 @@ CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs, int algnid, int keysize)
         ASN1_INTEGER *key = NULL;
 
         if (keysize > 0) {
-                key = ASN1_INTEGER_new();
-                if (key == NULL || !ASN1_INTEGER_set(key, keysize))
+                if ((key = ASN1_INTEGER_new()) == NULL)
                         return 0;
+                if (!ASN1_INTEGER_set(key, keysize)) {
+                        ASN1_INTEGER_free(key);
+                        return 0;
+                }
         }
         alg = X509_ALGOR_new();
         if (alg == NULL) {