[PATCH] sunrpc: cache_register can use wrong module reference

[linux-2.6] / net / ipv4 / netfilter / ipt_mark.c

diff --git a/net/ipv4/netfilter/ipt_mark.c b/net/ipv4/netfilter/ipt_mark.c
index 8955728127b9528e720fdba0259da1f9d216f261..00bef6cdd3f8e3c6b164bea7142b8dba81448be9 100644 (file)
--- a/net/ipv4/netfilter/ipt_mark.c
+++ b/net/ipv4/netfilter/ipt_mark.c
@@ -37,9 +37,16 @@ checkentry(const char *tablename,
            unsigned int matchsize,
            unsigned int hook_mask)
 {
+       struct ipt_mark_info *minfo = (struct ipt_mark_info *) matchinfo;
+
        if (matchsize != IPT_ALIGN(sizeof(struct ipt_mark_info)))
                return 0;
 
+       if (minfo->mark > 0xffffffff || minfo->mask > 0xffffffff) {
+               printk(KERN_WARNING "mark: only supports 32bit mark\n");
+               return 0;
+       }
+
        return 1;
 }