Add check for the return value of devm_kmemdup()
to prevent potential null pointer dereference.

Fixes: c76488109616 ("ice: Implement Dynamic Device Personalization (DDP) download")
Cc: stable@vger.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
---
Changes in v2:
- modify the Fixes commit number. Thanks, Michal!
---
 drivers/net/ethernet/intel/ice/ice_ddp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_ddp.c b/drivers/net/ethernet/intel/ice/ice_ddp.c
index 59323c019544..351824dc3c62 100644
--- a/drivers/net/ethernet/intel/ice/ice_ddp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ddp.c
@@ -2301,6 +2301,8 @@ enum ice_ddp_state ice_copy_and_init_pkg(struct ice_hw *hw, const u8 *buf,
 		return ICE_DDP_PKG_ERR;
 
 	buf_copy = devm_kmemdup(ice_hw_to_dev(hw), buf, len, GFP_KERNEL);
+	if (!buf_copy)
+		return ICE_DDP_PKG_ERR;
 
 	state = ice_init_pkg(hw, buf_copy, len);
 	if (!ice_is_init_pkg_successful(state)) {
-- 
2.25.1

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of Haoxiang Li
> Sent: 03 July 2025 15:23
> To: Nguyen, Anthony L <anthony.l.nguyen@intel.com>; Kitszel, Przemyslaw <przemyslaw.kitszel@intel.com>; andrew+netdev@lunn.ch; davem@davemloft.net; edumazet@google.com; kuba@kernel.org; pabeni@redhat.com
> Cc: intel-wired-lan@lists.osuosl.org; netdev@vger.kernel.org; linux-kernel@vger.kernel.org; Haoxiang Li <haoxiang_li2024@163.com>; stable@vger.kernel.org; Michal Swiatkowski <michal.swiatkowski@linux.intel.com>; Loktionov, Aleksandr <aleksandr.loktionov@intel.com>
> Subject: [Intel-wired-lan] [PATCH v2] ice: Fix a null pointer dereference in ice_copy_and_init_pkg()
>
> Add check for the return value of devm_kmemdup() to prevent potential null pointer dereference.
>
> Fixes: c76488109616 ("ice: Implement Dynamic Device Personalization (DDP) download")
> Cc: stable@vger.kernel.org
> Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
> Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
> Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
> ---
> Changes in v2:
> - modify the Fixes commit number. Thanks, Michal!
> ---
> drivers/net/ethernet/intel/ice/ice_ddp.c | 2 ++
> 1 file changed, 2 insertions(+)
>

Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)

On Thu, Jul 03, 2025 at 05:52:32PM +0800, Haoxiang Li wrote:
> Add check for the return value of devm_kmemdup()
> to prevent potential null pointer dereference.
> 
> Fixes: c76488109616 ("ice: Implement Dynamic Device Personalization (DDP) download")
> Cc: stable@vger.kernel.org
> Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
> Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
> Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
> ---
> Changes in v2:
> - modify the Fixes commit number. Thanks, Michal!

Reviewed-by: Simon Horman <horms@kernel.org>