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-rw-r--r--net/ipv6/netfilter/ip6_tables.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 26a5ad1cc4fd..b248528f2a17 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -750,7 +750,8 @@ check_entry_size_and_hooks(struct ip6t_entry *e,
int err;
if ((unsigned long)e % __alignof__(struct ip6t_entry) != 0 ||
- (unsigned char *)e + sizeof(struct ip6t_entry) >= limit) {
+ (unsigned char *)e + sizeof(struct ip6t_entry) >= limit ||
+ (unsigned char *)e + e->next_offset > limit) {
duprintf("Bad offset %p\n", e);
return -EINVAL;
}
@@ -1504,7 +1505,8 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
duprintf("check_compat_entry_size_and_hooks %p\n", e);
if ((unsigned long)e % __alignof__(struct compat_ip6t_entry) != 0 ||
- (unsigned char *)e + sizeof(struct compat_ip6t_entry) >= limit) {
+ (unsigned char *)e + sizeof(struct compat_ip6t_entry) >= limit ||
+ (unsigned char *)e + e->next_offset > limit) {
duprintf("Bad offset %p, limit = %p\n", e, limit);
return -EINVAL;
}