fix NP deref

private-home and private-bin are included just for consistency

1 files changed, 6 insertions, 0 deletions

diff --git a/src/firejail/fs_lib.c b/src/firejail/fs_lib.c
index 77c9a0cf5..a607280a0 100644
--- a/src/firejail/fs_lib.c
+++ b/src/firejail/fs_lib.c
@@ -196,6 +196,8 @@ static void load_library(const char *fname) {
 }
 
 static void install_list_entry(const char *lib) {
+        assert(lib);
+
         // filename check
         int len = strlen(lib);
         if (strcspn(lib, "\\&!?\"'<>%^(){}[];,") != (size_t)len ||
@@ -255,6 +257,10 @@ void fslib_install_list(const char *lib_list) {
                 errExit("strdup");
 
         char *ptr = strtok(dlist, ",");
+        if (!ptr) {
+                fprintf(stderr, "Error: invalid private-lib argument\n");
+                exit(1);
+        }
         install_list_entry(ptr);
 
         while ((ptr = strtok(NULL, ",")) != NULL)