Message ID | 1457624337-22326-1-git-send-email-tim.gardner@canonical.com |
---|---|
State | New |
Headers | show |
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index d4aaad7..865cf73 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -658,6 +658,9 @@ struct xt_table_info *xt_alloc_table_info(unsigned int size) struct xt_table_info *info = NULL; size_t sz = sizeof(*info) + size; + if (sz < size || sz < sizeof(*info)) + return NULL; + /* Pedantry: prevent them from hitting BUG() in vmalloc.c --RR */ if ((SMP_ALIGN(size) >> PAGE_SHIFT) + 2 > totalram_pages) return NULL;