do not crash when missing action argument (RHEL-90414)

Resolves: RHEL-90414

usermode-1.114-fixnoargs.patch

@@ -0,0 +1,16 @@
+diff -up usermode-1.114-build/usermode-1.114/userhelper.c.fixnoargs usermode-1.114-build/usermode-1.114/userhelper.c
+--- usermode-1.114-build/usermode-1.114/userhelper.c.fixnoargs	2025-07-09 00:13:58.800352637 +0200
++++ usermode-1.114-build/usermode-1.114/userhelper.c	2025-07-09 00:13:58.814677097 +0200
+@@ -2397,6 +2397,12 @@ main(int argc, char **argv)
+ 		exit(ERR_INVALID_CALL);
+ 	}
+ 
++	if (!SHELL_FLAGS && !c_flag && !w_flag) {
++		debug_msg("userhelper: invalid call: "
++			"missing action argument\n");
++		exit(ERR_INVALID_CALL);
++	}
++
+ 	/* Determine which conversation function to use. */
+ 	if (t_flag) {
+ 		/* We were told to use text mode. */

usermode.spec

@@ -4,7 +4,7 @@
 Summary: Tools for certain user account management tasks
 Name: usermode
 Version: 1.114
-Release: 6%{?dist}
+Release: 7%{?dist}
 License: GPLv2+
 URL: https://pagure.io/%{name}/
 Source: https://releases.pagure.org/%{name}/%{name}-%{version}.tar.xz
@@ -12,6 +12,9 @@ Source1: config-util
 Patch1:  usermode-1.114-fix_sast.patch
 # do not free environ as glibc may want to do that, RHEL-76332
 Patch2:  usermode-1.114-fixfree.patch
+
+# sent upstream, for <= 1.114, RHEL-90414
+Patch3:  usermode-1.114-fixnoargs.patch
 Requires: pam, passwd, util-linux
 # https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/thread/IJFYI5Q2BYZKIGDFS2WLOBDUSEGWHIKV/
 BuildRequires: make
@@ -53,6 +56,7 @@ graphical tools for certain account management tasks.
 %setup -q
 %patch -P 1 -p1 -b .fix_sast
 %patch -P 2 -p1 -b .fixfree
+%patch -P 3 -p2 -b .fixnoargs
 
 %build
 %configure --with-selinux --without-fexecve %{!?with_gtk:--without-gtk}
@@ -113,6 +117,9 @@ done
 %endif
 
 %changelog
+* Wed Jul 09 2025 Michal Hlavinka <mhlavink@redhat.com> - 1.114-7
+- do not crash when missing action argument (RHEL-90414)
+
 * Mon Jan 27 2025 Michal Hlavinka <mhlavink@redhat.com> - 1.114-6
 - do not (double) free environ as glibc may want to do that (RHEL-76332)