linux-kernel - Re: [PATCH 2/2] software node: Correct a OOB check in software_node_get_reference

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Message-ID: <fb77f98a-7e1e-40ac-bccb-0023da6bc297@icloud.com>
Date: Mon, 14 Apr 2025 19:12:27 +0800
From: Zijun Hu <zijun_hu@...oud.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Daniel Scally <djrscally@...il.com>,
 Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
 Sakari Ailus <sakari.ailus@...ux.intel.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 "Rafael J. Wysocki" <rafael@...nel.org>, Danilo Krummrich <dakr@...nel.org>,
 linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
 Zijun Hu <quic_zijuhu@...cinc.com>
Subject: Re: [PATCH 2/2] software node: Correct a OOB check in
 software_node_get_reference_args()

On 2025/4/14 16:08, Andy Shevchenko wrote:
> On Thu, Apr 10, 2025 at 09:12:12PM +0800, Zijun Hu wrote:
>> From: Zijun Hu <quic_zijuhu@...cinc.com>
>>
>> software_node_get_reference_args() wants to get @index-th element, so
>> the property value requires at least '(index + 1) * sizeof(*ref)' bytes.
>>
>> Correct the check to avoid OOB access.
> Any real traceback?

no, find this issue during reading code.