mac poly1305: add missing NULL check in new function.

Bug reported by Kihong Heo.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10613)

diff --git a/providers/implementations/macs/poly1305_prov.c b/providers/implementations/macs/poly1305_prov.c
index 950704620f46c9d0784a751fb54965fc2dae50d7..1edd2dc06312a60270ca7c98c613f463be5ba305 100644 (file)
--- a/providers/implementations/macs/poly1305_prov.c
+++ b/providers/implementations/macs/poly1305_prov.c
@@ -45,7 +45,8 @@ static void *poly1305_new(void *provctx)
 {
     struct poly1305_data_st *ctx = OPENSSL_zalloc(sizeof(*ctx));
 
-    ctx->provctx = provctx;
+    if (ctx != NULL)
+        ctx->provctx = provctx;
     return ctx;
 }