diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2021-03-30 16:24:11 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2021-03-31 01:12:47 +0200 |
| commit | 0e07e25b481aa021e4b48085ecb8a049e9614510 (patch) | |
| tree | 029ecb45b29558b9277c898887c660426a66a477 /net | |
| parent | 9adc89af724f12a03b47099cd943ed54e877cd59 (diff) | |
netfilter: flowtable: fix NAT IPv6 offload mangling
Fix out-of-bound access in the address array.
Fixes: 5c27d8d76ce8 ("netfilter: nf_flow_table_offload: add IPv6 support")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/nf_flow_table_offload.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/netfilter/nf_flow_table_offload.c b/net/netfilter/nf_flow_table_offload.c index 2a6993fa40d7..1c5460e7bce8 100644 --- a/net/netfilter/nf_flow_table_offload.c +++ b/net/netfilter/nf_flow_table_offload.c @@ -305,12 +305,12 @@ static void flow_offload_ipv6_mangle(struct nf_flow_rule *flow_rule, const __be32 *addr, const __be32 *mask) { struct flow_action_entry *entry; - int i; + int i, j; - for (i = 0; i < sizeof(struct in6_addr) / sizeof(u32); i += sizeof(u32)) { + for (i = 0, j = 0; i < sizeof(struct in6_addr) / sizeof(u32); i += sizeof(u32), j++) { entry = flow_action_entry_next(flow_rule); flow_offload_mangle(entry, FLOW_ACT_MANGLE_HDR_TYPE_IP6, - offset + i, &addr[i], mask); + offset + i, &addr[j], mask); } } |