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| author | Kyle Zeng <zengyhkyle@gmail.com> | 2023-09-05 15:04:09 -0700 |
|---|---|---|
| committer | Florian Westphal <fw@strlen.de> | 2023-09-06 18:09:12 +0200 |
| commit | 050d91c03b28ca479df13dfb02bcd2c60dd6a878 (patch) | |
| tree | 63bd4a8adb4e199e0cd5ab761b5558ec65e91daa /net | |
| parent | 2ee52ae94baabf7ee09cf2a8d854b990dac5d0e4 (diff) | |
| download | lwn-050d91c03b28ca479df13dfb02bcd2c60dd6a878.tar.gz lwn-050d91c03b28ca479df13dfb02bcd2c60dd6a878.zip | |
netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c
The missing IP_SET_HASH_WITH_NET0 macro in ip_set_hash_netportnet can
lead to the use of wrong `CIDR_POS(c)` for calculating array offsets,
which can lead to integer underflow. As a result, it leads to slab
out-of-bound access.
This patch adds back the IP_SET_HASH_WITH_NET0 macro to
ip_set_hash_netportnet to address the issue.
Fixes: 886503f34d63 ("netfilter: ipset: actually allow allowable CIDR 0 in hash:net,port,net")
Suggested-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Kyle Zeng <zengyhkyle@gmail.com>
Acked-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/ipset/ip_set_hash_netportnet.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/netfilter/ipset/ip_set_hash_netportnet.c b/net/netfilter/ipset/ip_set_hash_netportnet.c index 005a7ce87217..bf4f91b78e1d 100644 --- a/net/netfilter/ipset/ip_set_hash_netportnet.c +++ b/net/netfilter/ipset/ip_set_hash_netportnet.c @@ -36,6 +36,7 @@ MODULE_ALIAS("ip_set_hash:net,port,net"); #define IP_SET_HASH_WITH_PROTO #define IP_SET_HASH_WITH_NETS #define IPSET_NET_COUNT 2 +#define IP_SET_HASH_WITH_NET0 /* IPv4 variant */ |