The following patch helps me

--- openssl-1.0.2f/crypto/srp/srp_vfy.c 2016-01-28 14:38:31.000000000 +0100
+++ openssl-1.0.2f-patched/crypto/srp/srp_vfy.c 2016-03-02 12:18:01.320339059 
+0100
@@ -588,8 +588,12 @@
         BN_free(N_bn);
         BN_free(g_bn);
     }
-    OPENSSL_cleanse(vf, vfsize);
-    OPENSSL_free(vf);
+    
+    if (vf) {
+        OPENSSL_cleanse(vf, vfsize);
+        OPENSSL_free(vf);
+    }
+
     BN_clear_free(s);
     BN_clear_free(v);
     return result;



note that it seems to be fixed in more recent openssl versions.

** Tags added: patch

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https://bugs.launchpad.net/bugs/1551274

Title:
  creating SRP file crashes openssl

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