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| author |   Tim Gardner <tim.gardner@canonical.com> | 2010-03-17 16:18:56 +0100 |
|---|---|---|
| committer |   Patrick McHardy <kaber@trash.net> | 2010-03-17 16:18:56 +0100 |
| commit | 606a9a02633c02d0e09fc96706f041053dbc57ee (patch) | |
| tree | 815148645d417a184479d9b83813c53441809e59 /net/netfilter/xt_recent.c | |
| parent | netfilter: xt_recent: add an entry reaper (diff) | |
| download | linux-dev-606a9a02633c02d0e09fc96706f041053dbc57ee.tar.xz linux-dev-606a9a02633c02d0e09fc96706f041053dbc57ee.zip | |
netfilter: xt_recent: check for unsupported user space flags
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/netfilter/xt_recent.c')
| -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 b65eca9e13a3..d2e7c80cd3c3 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) |