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 lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (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 887E8CA5FCE for ; Mon, 5 Oct 2026 05:46:52 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1xDbX5-0004Ls-Un; Mon, 05 Oct 2026 01:46:39 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1xDbX4-0004Jy-1L for qemu-devel@nongnu.org; Mon, 05 Oct 2026 01:46:38 -0400 Received: from out-120.mta0.migadu.com ([2001:41d0:1004:224b::78] helo=mta0.migadu.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1xDbX1-0004MZ-Om for qemu-devel@nongnu.org; Mon, 05 Oct 2026 01:46:37 -0400 X-Envelope-To: qemu-devel@nongnu.org DKIM-Signature: a=rsa-sha256; bh=duVJNez5hyGJqH1a1Fu+tWEmZja2poZI1ssYgIeav4Q=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1791179193; v=1; x=1791783993; b=StO8Ufo6kBlkWBQ5goAV0hjEQ21zlfXkiamqtg+g6W670L2p3acVHDLLswhgszeyMZIK/mlb nDNDQodgmIn/2lNQAcK8VN8Ax/MfyBFhyAFpvq81EpAJQ0WOXdOhHttLjf+9pPc+E1XvJIwsb7v HQxSSnnGw+Y45PdtvHG19rfA= X-Envelope-To: qemu-devel@nongnu.org Received: by smtp.migadu.com with ESMTPS id afbae5d2f97816b0; Mon, 05 Oct 2026 05:46:33 +0000 X-Mizu-Trace-ID: afbae5d2f97816b0 X-Migadu-Flow: FLOW_OUT From: Junjie Cao To: qemu-devel@nongnu.org Cc: thuth@redhat.com, kraxel@redhat.com, philmd@oss.qualcomm.com, marcandre.lureau@redhat.com, junjie.cao@linux.dev Subject: [PATCH v2 0/2] usb-host: validate and release configuration descriptors Date: Mon, 5 Oct 2026 00:46:24 -0500 Message-ID: <20261005054626.131577-1-junjie.cao@linux.dev> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2001:41d0:1004:224b::78; envelope-from=junjie.cao@linux.dev; helo=mta0.migadu.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The libusb host backend reads interface numbers from the active configuration descriptor while opening a device. An out-of-range number can index past USBDevice.altsetting. The backend also leaves an allocated descriptor behind on endpoint parse and interface claim failures. Changes in v2: - Use g_autoptr for configuration descriptors in usb_host_ep_update() and usb_host_claim_interfaces() (Marc-André). - Collected tags from Marc-André. v1: https://lore.kernel.org/qemu-devel/20261004042722.6937-1-junjie.cao@linux.dev/ Junjie Cao (2): usb-host: validate interface number before indexing altsetting usb-host: free configuration descriptors on error paths hw/usb/host-libusb.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) base-commit: d7a65d1793d691d356a56833620f7d1e6f5d653b -- 2.43.0