upstream: memleak of DH public bignum; found with libfuzzer

OpenBSD-Commit-ID: 0e913b542c3764b100b1571fdb0d0e5cc086fe97

diff --git a/kexdh.c b/kexdh.c
index 6e0159f9f1010e084208aeadba93b512bfe93ef1..001dd12db57ae6642b2521be3c50a079fb00cde0 100644 (file)
--- a/kexdh.c
+++ b/kexdh.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: kexdh.c,v 1.33 2020/05/08 05:13:14 djm Exp $ */
+/* $OpenBSD: kexdh.c,v 1.34 2020/12/04 02:29:25 djm Exp $ */
 /*
  * Copyright (c) 2019 Markus Friedl.  All rights reserved.
  *
@@ -194,6 +194,7 @@ kex_dh_dec(struct kex *kex, const struct sshbuf *dh_blob,
        *shared_secretp = buf;
        buf = NULL;
  out:
+       BN_free(dh_pub);
        DH_free(kex->dh);
        kex->dh = NULL;
        sshbuf_free(buf);