release GSS OIDs only at end of authentication; bz2982, ok dtucker@

diff --git a/usr.bin/ssh/sshconnect2.c b/usr.bin/ssh/sshconnect2.c
index dbc338f..3bf4d6c 100644 (file)
--- a/usr.bin/ssh/sshconnect2.c
+++ b/usr.bin/ssh/sshconnect2.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshconnect2.c,v 1.367 2023/08/01 08:15:04 dtucker Exp $ */
+/* $OpenBSD: sshconnect2.c,v 1.368 2023/10/12 02:15:53 djm Exp $ */
 /*
  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
  * Copyright (c) 2008 Damien Miller.  All rights reserved.
@@ -469,6 +469,14 @@ ssh_userauth2(struct ssh *ssh, const char *local_user,
        ssh_dispatch_set(ssh, SSH2_MSG_SERVICE_ACCEPT, &input_userauth_service_accept);
        ssh_dispatch_run_fatal(ssh, DISPATCH_BLOCK, &authctxt.success); /* loop until success */
        pubkey_cleanup(ssh);
+#ifdef GSSAPI
+       if (authctxt.gss_supported_mechs != NULL) {
+               u_int ms;
+
+               gss_release_oid_set(&ms, &authctxt.gss_supported_mechs);
+               authctxt.gss_supported_mechs = NULL;
+       }
+#endif
        ssh->authctxt = NULL;
 
        ssh_dispatch_range(ssh, SSH2_MSG_USERAUTH_MIN, SSH2_MSG_USERAUTH_MAX, NULL);
@@ -813,9 +821,6 @@ userauth_gssapi_cleanup(struct ssh *ssh)
 
        ssh_gssapi_delete_ctx(&gssctxt);
        authctxt->methoddata = NULL;
-
-       free(authctxt->gss_supported_mechs);
-       authctxt->gss_supported_mechs = NULL;
 }
 
 static OM_uint32