linux-kernel - Re: [PATCH] x86/vmware: fix panic in vmware_hypercall

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Date: Tue, 25 Jun 2024 10:47:21 +0200
From: Borislav Petkov <bp@...en8.de>
To: Alexey Makhalov <alexey.makhalov@...adcom.com>
Cc: linux-kernel@...r.kernel.org, virtualization@...ts.linux.dev,
	hpa@...or.com, dave.hansen@...ux.intel.com, mingo@...hat.com,
	tglx@...utronix.de, x86@...nel.org, ajay.kaher@...adcom.com,
	bcm-kernel-feedback-list@...adcom.com,
	Alex James <alex.james@...adcom.com>
Subject: Re: [PATCH] x86/vmware: fix panic in vmware_hypercall_slow()

On Tue, Jun 25, 2024 at 01:33:48AM -0700, Alexey Makhalov wrote:
> Caller of vmware_hypercall_slow() can pass NULL into *out1,
> *out2,... *out5. It will lead to a NULL pointer dereference.
> 
> Check a pointer for NULL before assigning a value.

I queue your patches and *now* you find this?!

How did you test them in the first place and why was this scenario missed?

Geez.

-- 
Regards/Gruss,
    Boris.

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