diff options
| author | Jozsef Kadlecsik <kadlec@netfilter.org> | 2021-07-28 17:01:15 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2021-08-04 10:41:03 +0200 |
| commit | 5f7b51bf09baca8e4f80cbe879536842bafb5f31 (patch) | |
| tree | bce22856b41c8a21912bda7a40cd77275f2a54e7 /include | |
| parent | c7d102232649226a69dddd58a4942cf13cff4f7c (diff) | |
netfilter: ipset: Limit the maximal range of consecutive elements to add/delete
The range size of consecutive elements were not limited. Thus one could
define a huge range which may result soft lockup errors due to the long
execution time. Now the range size is limited to 2^20 entries.
Reported-by: Brad Spengler <spender@grsecurity.net>
Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/netfilter/ipset/ip_set.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/netfilter/ipset/ip_set.h b/include/linux/netfilter/ipset/ip_set.h index 10279c4830ac..ada1296c87d5 100644 --- a/include/linux/netfilter/ipset/ip_set.h +++ b/include/linux/netfilter/ipset/ip_set.h @@ -196,6 +196,9 @@ struct ip_set_region { u32 elements; /* Number of elements vs timeout */ }; +/* Max range where every element is added/deleted in one step */ +#define IPSET_MAX_RANGE (1<<20) + /* The max revision number supported by any set type + 1 */ #define IPSET_REVISION_MAX 9 |