diff options
Diffstat (limited to 'net/netfilter')
-rw-r--r-- | net/netfilter/xt_recent.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/netfilter/xt_recent.c b/net/netfilter/xt_recent.c index b65eca9..d2e7c80 100644 --- a/net/netfilter/xt_recent.c +++ b/net/netfilter/xt_recent.c @@ -319,6 +319,11 @@ static bool recent_mt_check(const struct xt_mtchk_param *par) get_random_bytes(&hash_rnd, sizeof(hash_rnd)); hash_rnd_inited = true; } + if (info->check_set & ~XT_RECENT_VALID_FLAGS) { + pr_info(KBUILD_MODNAME ": Unsupported user space flags " + "(%08x)\n", info->check_set); + return false; + } if (hweight8(info->check_set & (XT_RECENT_SET | XT_RECENT_REMOVE | XT_RECENT_CHECK | XT_RECENT_UPDATE)) != 1) |