2 files changed, 6 insertions, 1 deletions

diff --git a/net/tipc/core.h b/net/tipc/core.h
index 86f54f3512f1..762aac2572be 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -297,7 +297,10 @@ static inline struct tipc_msg *buf_msg(struct sk_buff *skb)
  * buf_acquire - creates a TIPC message buffer
  * @size: message size (including TIPC header)
  *
- * Returns a new buffer.  Space is reserved for a data link header.
+ * Returns a new buffer with data pointers set to the specified size.
+ * 
+ * NOTE: Headroom is reserved to allow prepending of a data link header.
+ *       There may also be unrequested tailroom present at the buffer's end.
  */
 
 static inline struct sk_buff *buf_acquire(u32 size)
diff --git a/net/tipc/link.c b/net/tipc/link.c
index c6831c75cfa4..c10e18a49b96 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -998,6 +998,8 @@ static int link_bundle_buf(struct link *l_ptr,
                 return 0;
         if (skb_tailroom(bundler) < (pad + size))
                 return 0;
+        if (link_max_pkt(l_ptr) < (to_pos + size))
+                return 0;
 
         skb_put(bundler, pad + size);
         memcpy(bundler->data + to_pos, buf->data, size);