diff options
| -rw-r--r-- | net/netfilter/xt_bpf.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/netfilter/xt_bpf.c b/net/netfilter/xt_bpf.c index 263f3c37d855..5185ff0f8f58 100644 --- a/net/netfilter/xt_bpf.c +++ b/net/netfilter/xt_bpf.c @@ -58,6 +58,9 @@ static int __bpf_mt_check_path(const char *path, struct bpf_prog **ret) mm_segment_t oldfs = get_fs(); int retval, fd; + if (strnlen(path, XT_BPF_PATH_MAX) == XT_BPF_PATH_MAX) + return -EINVAL; + set_fs(KERNEL_DS); fd = bpf_obj_get_user(path); set_fs(oldfs); |