From nobody Tue Feb 10 08:03:51 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 177006203719951.64213451115495; Mon, 2 Feb 2026 11:53:57 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vmzwM-00069J-OX; Mon, 02 Feb 2026 14:50:31 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vmzvi-0005Bp-EK; Mon, 02 Feb 2026 14:49:54 -0500 Received: from isrv.corpit.ru ([212.248.84.144]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vmzvg-0003b3-UH; Mon, 02 Feb 2026 14:49:50 -0500 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id 869A21850B6; Mon, 02 Feb 2026 22:46:05 +0300 (MSK) Received: from think4mjt.tls.msk.ru (mjtthink.wg.tls.msk.ru [192.168.177.146]) by tsrv.corpit.ru (Postfix) with ESMTP id EB28335B298; Mon, 02 Feb 2026 22:46:46 +0300 (MSK) From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Vulnerability Report , David Woodhouse , Paolo Bonzini , Michael Tokarev Subject: [Stable-10.0.8 36/69] hw/i386/kvm: fix PIRQ bounds check in xen_physdev_map_pirq() Date: Mon, 2 Feb 2026 22:45:59 +0300 Message-ID: <20260202194638.939438-36-mjt@tls.msk.ru> X-Mailer: git-send-email 2.47.3 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=212.248.84.144; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1770062039362154100 Content-Type: text/plain; charset="utf-8" From: Vulnerability Report Reject pirq =3D=3D s->nr_pirqs in xen_physdev_map_pirq(). Fixes: aa98ee38a5 ("hw/xen: Implement emulated PIRQ hypercall support") Fixes: CVE-2026-0665 Reported-by: DARKNAVY (@DarkNavyOrg) Reviewed-by: David Woodhouse Signed-off-by: Vulnerability Report Link: https://lore.kernel.org/r/13FE03BE60EA78D6+20260109023548.4047-1-vr@d= arknavy.com Signed-off-by: Paolo Bonzini (cherry picked from commit c7504ba2a560fd884557f6e5142f03b491aad0c7) Signed-off-by: Michael Tokarev diff --git a/hw/i386/kvm/xen_evtchn.c b/hw/i386/kvm/xen_evtchn.c index 9b8b092bc2..4618daaa30 100644 --- a/hw/i386/kvm/xen_evtchn.c +++ b/hw/i386/kvm/xen_evtchn.c @@ -1877,7 +1877,7 @@ int xen_physdev_map_pirq(struct physdev_map_pirq *map) return pirq; } map->pirq =3D pirq; - } else if (pirq > s->nr_pirqs) { + } else if (pirq >=3D s->nr_pirqs) { return -EINVAL; } else { /* --=20 2.47.3