linux-kernel - Re: [PATCH v3] cxl: Fix possible null pointer dereference in read

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Message-ID: <2024071459-obscurity-landlord-af08@gregkh>
Date: Sun, 14 Jul 2024 15:37:33 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Ma Ke <make24@...as.ac.cn>
Cc: fbarrat@...ux.ibm.com, ajd@...ux.ibm.com, arnd@...db.de,
	imunsie@....ibm.com, manoj@...ux.vnet.ibm.com, mpe@...erman.id.au,
	clombard@...ux.vnet.ibm.com, linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH v3] cxl: Fix possible null pointer dereference in
 read_handle()

On Sun, Jul 14, 2024 at 08:14:04PM +0800, Ma Ke wrote:
> In read_handle(), of_get_address() may return NULL which is later
> dereferenced. Fix this by adding NULL check.
> 
> Based on our customized static analysis tool, extract vulnerability
> features[1], then match similar vulnerability features in this function.

Please follow the documented rules for researchers submitting patches
based on non-public tools.

thanks,

greg k-h