From 4ea6f73060c6b7c7fc24fbff78fc4c89a828e30f Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <Todd.Miller@sudo.ws>
Date: Mon, 4 Jan 2021 14:48:42 -0700
Subject: [PATCH] Fix a crash introduced in 1.9.4 when running "sudo -i" as an
 unknown user.

---
 plugins/sudoers/logging.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/sudoers/logging.c b/plugins/sudoers/logging.c
index e0d46280c..776f881e5 100644
--- a/plugins/sudoers/logging.c
+++ b/plugins/sudoers/logging.c
@@ -669,7 +669,7 @@ sudoers_to_eventlog(struct eventlog *evlog, char * const argv[],
     }
     if (def_runcwd && strcmp(def_runcwd, "*") != 0) {
 	evlog->runcwd = def_runcwd;
-    } else if (ISSET(sudo_mode, MODE_LOGIN_SHELL)) {
+    } else if (ISSET(sudo_mode, MODE_LOGIN_SHELL) && runas_pw != NULL) {
 	evlog->runcwd = runas_pw->pw_dir;
     } else {
 	evlog->runcwd = user_cwd;