check the return value of OPENSSL_strdup(CRYPTO_strdup) to prevent potential memory...

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17113)

diff --git a/apps/lib/app_rand.c b/apps/lib/app_rand.c
index d3181e56faae67671107b775de27597dd0fcf98a..1e10044accd20bb3ddfb49fc31a439cb0be7a72e 100644 (file)
--- a/apps/lib/app_rand.c
+++ b/apps/lib/app_rand.c
@@ -110,6 +110,8 @@ int opt_rand(int opt)
     case OPT_R_WRITERAND:
         OPENSSL_free(save_rand_file);
         save_rand_file = OPENSSL_strdup(opt_arg());
+        if (save_rand_file == NULL)
+            return 0;
         break;
     }
     return 1;