linux-kernel - Re: [PATCH v2 4/5] x86/bugs: Add attack vector controls for SSB

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250827142225.GIaK8UoYo-rnR9T2OD@fat_crate.local>
Date: Wed, 27 Aug 2025 16:22:25 +0200
From: Borislav Petkov <bp@...en8.de>
To: "Kaplan, David" <David.Kaplan@....com>
Cc: Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Josh Poimboeuf <jpoimboe@...nel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"H . Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 4/5] x86/bugs: Add attack vector controls for SSB

On Wed, Aug 27, 2025 at 02:05:14PM +0000, Kaplan, David wrote:
> If you really want to not pick up patch #3 yet, then you could move the
> should_mitigate_vuln() check into the switch statement for
> SPEC_STORE_BYPASS_CMD_AUTO only.  Or just pick up the clean-up patch which
> also reduces the overall code size.

I need a minimal fix which goes into 6.17 now because we forgot SSB. This
patch was my attempt at doing something like that.

Cleanups can then go ontop.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette