[PATCH] net: dev_addr_list: add address length validation in __hw_addr_insert function

[Suchit K]

Add validation checks for hardware address length in
__hw_addr_insert() to prevent problems with invalid lengths.

Signed-off-by: Suchit Karunakaran <suchitkarunakaran@xxxxxxxxx>
---
 net/core/dev_addr_lists.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c
index 90716bd73..b6b906b2a 100644
--- a/net/core/dev_addr_lists.c
+++ b/net/core/dev_addr_lists.c
@@ -21,6 +21,9 @@
 static int __hw_addr_insert(struct netdev_hw_addr_list *list,
      struct netdev_hw_addr *new, int addr_len)
 {
+ if (!list || !new || addr_len <= 0 || addr_len > MAX_ADDR_LEN)
+ return -EINVAL;
+
  struct rb_node **ins_point = &list->tree.rb_node, *parent = NULL;
  struct netdev_hw_addr *ha;

-- 
2.48.1