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-rw-r--r--net/ipv6/netfilter/ip6t_rt.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/ipv6/netfilter/ip6t_rt.c b/net/ipv6/netfilter/ip6t_rt.c
index 4ad8b2032f1f..5561bd9cea81 100644
--- a/net/ipv6/netfilter/ip6t_rt.c
+++ b/net/ipv6/netfilter/ip6t_rt.c
@@ -157,6 +157,10 @@ static int rt_mt6_check(const struct xt_mtchk_param *par)
pr_debug("unknown flags %X\n", rtinfo->invflags);
return -EINVAL;
}
+ if (rtinfo->addrnr > IP6T_RT_HOPS) {
+ pr_debug("too many addresses specified\n");
+ return -EINVAL;
+ }
if ((rtinfo->flags & (IP6T_RT_RES | IP6T_RT_FST_MASK)) &&
(!(rtinfo->flags & IP6T_RT_TYP) ||
(rtinfo->rt_type != 0) ||