argv: private-home: exit on invalid option

1 files changed, 4 insertions, 0 deletions

diff --git a/src/firejail/main.c b/src/firejail/main.c
index 15820f7dd..f9742cc3f 100644
--- a/src/firejail/main.c
+++ b/src/firejail/main.c
@@ -1500,6 +1500,10 @@ int main(int argc, char **argv) {
                                 }
                                 
                                 // extract private home dirname
+                                if (*(argv[i] + 15) == '\0') {
+                                        fprintf(stderr, "Error: invalid private-home option\n");
+                                        exit(1);
+                                }
                                 cfg.home_private_keep = argv[i] + 15;
                                 arg_private = 1;
                         }