fix NP deref

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

1 files changed, 4 insertions, 0 deletions

diff --git a/src/firejail/fs_home.c b/src/firejail/fs_home.c
index 09931bd56..3b5094ac9 100644
--- a/src/firejail/fs_home.c
+++ b/src/firejail/fs_home.c
@@ -494,6 +494,10 @@ void fs_private_home_list(void) {
                 errExit("strdup");
 
         char *ptr = strtok(dlist, ",");
+        if (!ptr) {
+                fprintf(stderr, "Error: invalid private-home argument\n");
+                exit(1);
+        }
         duplicate(ptr);
         while ((ptr = strtok(NULL, ",")) != NULL)
                 duplicate(ptr);