linux-kernel - Re: [RFC PATCH v2] x86/boot: add .sbat section to the bzImage

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Message-ID: <20230717110631.GH4253@hirez.programming.kicks-ass.net>
Date:   Mon, 17 Jul 2023 13:06:31 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Daniel P. Berrangé <berrange@...hat.com>
Cc:     Greg KH <gregkh@...uxfoundation.org>,
        Luca Boccassi <bluca@...ian.org>,
        Borislav Petkov <bp@...en8.de>,
        Emanuele Giuseppe Esposito <eesposit@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Thomas Gleixner <tglx@...utronix.de>, lennart@...ttering.net,
        Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Alexander Potapenko <glider@...gle.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v2] x86/boot: add .sbat section to the bzImage

On Mon, Jul 17, 2023 at 10:22:51AM +0100, Daniel P. Berrangé wrote:
> I'm not aware of any kernel CVEs since that point in time that
> would have implied SBAT changes, but admittedly I've not paid
> close enough attention to be entirely confident. Is going back
> through 2 years of kernel CVEs (to the point where SBAT was
> invented) a long enough timeframe to satisfy this request for
> info on the frequency of changes ?

Many *MANY* security bugs never get a CVE. CVE is meaningless when it
comes to kernel bugs. Why does it make sense to review CVEs ?