diff options
| author | Zhen Ni <zhen.ni@easystack.cn> | 2025-08-27 19:56:31 +0800 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2025-09-02 11:08:52 -0700 |
| commit | a556f06338e1d5a85af0e32ecb46e365547f92b9 (patch) | |
| tree | bbb05caa967c3038eac63846fe3e1e861efbfaae | |
| parent | 9fcdb1c3c4ba134434694c001dbff343f1ffa319 (diff) | |
i40e: Fix potential invalid access when MAC list is empty
list_first_entry() never returns NULL - if the list is empty, it still
returns a pointer to an invalid object, leading to potential invalid
memory access when dereferenced.
Fix this by using list_first_entry_or_null instead of list_first_entry.
Fixes: e3219ce6a775 ("i40e: Add support for client interface for IWARP driver")
Signed-off-by: Zhen Ni <zhen.ni@easystack.cn>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_client.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_client.c b/drivers/net/ethernet/intel/i40e/i40e_client.c index 5f1a405cbbf8..518bc738ea3b 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_client.c +++ b/drivers/net/ethernet/intel/i40e/i40e_client.c @@ -359,8 +359,8 @@ static void i40e_client_add_instance(struct i40e_pf *pf) if (i40e_client_get_params(vsi, &cdev->lan_info.params)) goto free_cdev; - mac = list_first_entry(&cdev->lan_info.netdev->dev_addrs.list, - struct netdev_hw_addr, list); + mac = list_first_entry_or_null(&cdev->lan_info.netdev->dev_addrs.list, + struct netdev_hw_addr, list); if (mac) ether_addr_copy(cdev->lan_info.lanmac, mac->addr); else |