From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C4563CCF9E3 for ; Thu, 30 Oct 2025 16:23:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=oYs14aBXiZWShSI4VzmjOlQav3e6tetAz3KKSYpGQ1U=; b=fvIXpw+W2epw/BmDp03JA2romb y+p8IcEY9CDwOp3biyG21IrpHoSEK04SN3NrSK6A+5we55ByYlWl8ozYUgu0hNLlY2cxSfhtXf4JC 0heaL2RosIOethAdj5SX2pR5cGy9MQ6CkU4CV0GewMvwfarSQKfMpzAyd2igtvmh4+MTpZzi5UGjM XiaEo8xLFeqkaQo/q+mlTe1KUFVvYgkKhIH2KspcBiffOuax/BzEpvjjvc3GAbfVTM4LjH0w05ibb 9isvBLfPHg8GXnCP66fhLKhKDn4zKZiv9zFFvWsAjPPc94g+jpxQPUEBa8iryc/GBJY6MMJDWW0JE sVL1Vt9w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vEVRE-00000004S7z-1GP8; Thu, 30 Oct 2025 16:23:48 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vEVRB-00000004S61-0CYp for linux-arm-kernel@lists.infradead.org; Thu, 30 Oct 2025 16:23:46 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 7248F40053; Thu, 30 Oct 2025 16:23:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 51835C4CEF8; Thu, 30 Oct 2025 16:23:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761841424; bh=QWMPQo2xAH0nVjguJgabX/CKiz1G+XFeSJIPZzq2RX4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lC2Qf7z3gzI4hcYBakTotXArYL+2a4IRhcLv37Duop1VcKGrYfMjGqwxyXmKgljIy T1vvj1uVxs4U2hrwzYFO7yOV5/5NMs8E3JqvxeFdyvn5NRwZ6UvBDpBmg9AGSYk5OC 8U0KBCqTlBQ/cfmYoEh3szJ4u+7MvabgyL2di2MLM/q9Dby9GUu93zKOMvwpHWcpf5 K1MxvgjofTR+PRj5ZQLG3CMUX+QraE4nqGObZQt755y6KFINTsDgQXBZwGKXelZgue +sRkDbSudpSR0W92FZ2axAUMg2NYSJy5AZwZspVkITKpxUaONsxEzmj30L/favqFzS CWtuo57c4BZDw== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1vEVR8-000000013BL-0vbN; Thu, 30 Oct 2025 16:23:42 +0000 From: Marc Zyngier To: oliver.upton@linux.dev, will@kernel.org, catalin.marinas@arm.com, suzuki.poulose@arm.com, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, joey.gouly@arm.com, Sebastian Ene Cc: ayrton@google.com, yuzenghui@huawei.com, qperret@google.com, vdonnefort@google.com, kernel-team@android.com Subject: Re: [PATCH] KVM: arm64: Check the untrusted offset in FF-A memory share Date: Thu, 30 Oct 2025 16:23:39 +0000 Message-ID: <176184141934.2037838.2419455993784869828.b4-ty@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20251017075710.2605118-1-sebastianene@google.com> References: <20251017075710.2605118-1-sebastianene@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: oliver.upton@linux.dev, will@kernel.org, catalin.marinas@arm.com, suzuki.poulose@arm.com, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, joey.gouly@arm.com, sebastianene@google.com, ayrton@google.com, yuzenghui@huawei.com, qperret@google.com, vdonnefort@google.com, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251030_092345_106415_E18B4F27 X-CRM114-Status: UNSURE ( 9.07 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 17 Oct 2025 07:57:10 +0000, Sebastian Ene wrote: > Verify the offset to prevent OOB access in the hypervisor > FF-A buffer in case an untrusted large enough value > [U32_MAX - sizeof(struct ffa_composite_mem_region) + 1, U32_MAX] > is set from the host kernel. > > Applied to fixes, thanks! [1/1] KVM: arm64: Check the untrusted offset in FF-A memory share commit: 103e17aac09cdd358133f9e00998b75d6c1f1518 Cheers, M. -- Without deviation from the norm, progress is not possible.