diff options
author | Phil Sutter <phil@nwl.cc> | 2018-09-10 23:35:13 +0200 |
---|---|---|
committer | Florian Westphal <fw@strlen.de> | 2018-09-13 10:47:42 +0200 |
commit | 4144571f87c094471419ef59e8bb89ef33cd1365 (patch) | |
tree | 78f5050c80dddea7339ddf5a570b8640c96a8922 /libxtables | |
parent | 9242b5d9341434a5ae1491f64802df6926340d20 (diff) |
libxtables: Fix potential array overrun in xtables_option_parse()
If entry->type is to be used as array index, it needs to be at max one
less than that array's size.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Florian Westphal <fw@strlen.de>
Diffstat (limited to 'libxtables')
-rw-r--r-- | libxtables/xtoptions.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libxtables/xtoptions.c b/libxtables/xtoptions.c index ba3128bd..326febd5 100644 --- a/libxtables/xtoptions.c +++ b/libxtables/xtoptions.c @@ -844,7 +844,7 @@ void xtables_option_parse(struct xt_option_call *cb) * a *RC option type. */ cb->nvals = 1; - if (entry->type <= ARRAY_SIZE(xtopt_subparse) && + if (entry->type < ARRAY_SIZE(xtopt_subparse) && xtopt_subparse[entry->type] != NULL) xtopt_subparse[entry->type](cb); /* Exclusion with other flags tested later in finalize. */ |