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Diffstat (limited to 'target/linux/generic/patches-4.9/612-netfilter_match_reduce_memory_access.patch')
-rw-r--r--target/linux/generic/patches-4.9/612-netfilter_match_reduce_memory_access.patch14
1 files changed, 14 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.9/612-netfilter_match_reduce_memory_access.patch b/target/linux/generic/patches-4.9/612-netfilter_match_reduce_memory_access.patch
new file mode 100644
index 0000000000..cd0414be1e
--- /dev/null
+++ b/target/linux/generic/patches-4.9/612-netfilter_match_reduce_memory_access.patch
@@ -0,0 +1,14 @@
+--- a/net/ipv4/netfilter/ip_tables.c
++++ b/net/ipv4/netfilter/ip_tables.c
+@@ -61,9 +61,9 @@ ip_packet_match(const struct iphdr *ip,
+ if (ipinfo->flags & IPT_F_NO_DEF_MATCH)
+ return true;
+
+- if (NF_INVF(ipinfo, IPT_INV_SRCIP,
++ if (NF_INVF(ipinfo, IPT_INV_SRCIP, ipinfo->smsk.s_addr &&
+ (ip->saddr & ipinfo->smsk.s_addr) != ipinfo->src.s_addr) ||
+- NF_INVF(ipinfo, IPT_INV_DSTIP,
++ NF_INVF(ipinfo, IPT_INV_DSTIP, ipinfo->dmsk.s_addr &&
+ (ip->daddr & ipinfo->dmsk.s_addr) != ipinfo->dst.s_addr))
+ return false;
+