diff options
| author | Jozsef Kadlecsik <kadlec@netfilter.org> | 2021-07-16 14:36:45 +0200 |
|---|---|---|
| committer | Jozsef Kadlecsik <kadlec@netfilter.org> | 2021-07-16 14:36:45 +0200 |
| commit | a63d02aeb7d00a2546c8bfc966b415704979b043 (patch) | |
| tree | 844aa3fbe03f995d38fdaf61656143a640806a3b /kernel/net/netfilter/ipset/ip_set_hash_ipportip.c | |
| parent | 0ec051e61f0568e27688248dc28f568127780437 (diff) | |
Limit the maximal range of consecutive elements to add/delete fix
Avoid possible number overflows when calculating the number of
consecutive elements. Also, compute properly the consecutive
elements in the case of hash:net* types.
Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Diffstat (limited to 'kernel/net/netfilter/ipset/ip_set_hash_ipportip.c')
| -rw-r--r-- | kernel/net/netfilter/ipset/ip_set_hash_ipportip.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/net/netfilter/ipset/ip_set_hash_ipportip.c b/kernel/net/netfilter/ipset/ip_set_hash_ipportip.c index 0728b38..0be8f53 100644 --- a/kernel/net/netfilter/ipset/ip_set_hash_ipportip.c +++ b/kernel/net/netfilter/ipset/ip_set_hash_ipportip.c @@ -181,7 +181,7 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[], swap(port, port_to); } - if ((ip_to - ip + 1)*(port_to - port + 1) > IPSET_MAX_RANGE) + if (((u64)ip_to - ip + 1)*(port_to - port + 1) > IPSET_MAX_RANGE) return -ERANGE; if (retried) |