pam_xdg: pam_get_item can return NULL

Fix pam_xdg as pam_get_item can return NULL, this happens when pressing control + C in xdm for example. MFC after: 1 week PR: 279268
evadot · May 27, 2024 · cca0ce6 · cca0ce6
1 parent f5f40dd
commit cca0ce6
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/lib/libpam/modules/pam_xdg/pam_xdg.c b/lib/libpam/modules/pam_xdg/pam_xdg.c
@@ -67,7 +67,7 @@ _pam_xdg_open(pam_handle_t *pamh, int flags __unused,
 
 	/* Get user info */
 	rv = pam_get_item(pamh, PAM_USER, (const void **)&user);
-	if (rv != PAM_SUCCESS) {
+	if (rv != PAM_SUCCESS || user == NULL) {
 		PAM_VERBOSE_ERROR("Can't get user information");
 		goto out;
 	}
@@ -221,7 +221,7 @@ _pam_xdg_close(pam_handle_t *pamh __unused, int flags __unused,
 
 	/* Get user info */
 	rv = pam_get_item(pamh, PAM_USER, (const void **)&user);
-	if (rv != PAM_SUCCESS) {
+	if (rv != PAM_SUCCESS || user == NULL) {
 		PAM_VERBOSE_ERROR("Can't get user information");
 		goto out;
 	}