From cc86b2ad965bff071185edbb77b5a6ea45023e43 Mon Sep 17 00:00:00 2001 From: Timo Teräs Date: Fri, 14 Jul 2017 09:59:52 +0200 Subject: add-remove-shell: fix crash when shell is already added Avoid dereferencing 'don_add' in strcmp since it is invalid pointer. Signed-off-by: Timo Teräs Signed-off-by: Denys Vlasenko --- loginutils/add-remove-shell.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'loginutils') diff --git a/loginutils/add-remove-shell.c b/loginutils/add-remove-shell.c index 922b333..54b62c7 100644 --- a/loginutils/add-remove-shell.c +++ b/loginutils/add-remove-shell.c @@ -84,7 +84,7 @@ int add_remove_shell_main(int argc UNUSED_PARAM, char **argv) while ((line = xmalloc_fgetline(orig_fp)) != NULL) { char **cpp = argv; while (*cpp) { - if (strcmp(*cpp, line) == 0) { + if (*cpp != dont_add && strcmp(*cpp, line) == 0) { /* Old file has this shell name */ if (REMOVE_SHELL) { /* we are remove-shell */ -- cgit v1.1