check for NULL return from shadow_pw()

probably unreachable on this platform; pointed out by
coolbugcheckers AT gmail.com

1 files changed, 3 insertions, 0 deletions

diff --git a/openbsd-compat/port-uw.c b/openbsd-compat/port-uw.c
index 9edb1b481..132213131 100644
--- a/openbsd-compat/port-uw.c
+++ b/openbsd-compat/port-uw.c
@@ -60,6 +60,9 @@ sys_auth_passwd(struct ssh *ssh, const char *password)
         /* Just use the supplied fake password if authctxt is invalid */
         char *pw_password = authctxt->valid ? shadow_pw(pw) : pw->pw_passwd;
 
+        if (pw_password == NULL)
+                return 0;
+
         /* Check for users with no password. */
         if (strcmp(pw_password, "") == 0 && strcmp(password, "") == 0)
                 return (1);