From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E7600389473 for ; Wed, 13 May 2026 15:09:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778684941; cv=none; b=uc3IBEL0J32ZjLrRDQERcSAxnAXb8c8I5PS3gHVTthaACbhKZLb+9pOFw+hlGvJDhurVcBbePm04yywyzJkBqRhL0DE1GidX0bGZysVwuKh1CrwSFNZguAYMpUnr/dYtOFL1FqfdN1Mi+Us23d68XHFrGqvzlhukcEQC5fPr34s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778684941; c=relaxed/simple; bh=7eblvAvTMKWc4yibxOgfDSmJmWWXy4b1vXiqs2ciaqw=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=esUtEniiVAZZGxkIzObUST5MGQlAvCltWzyRs82e4U2LzgrpGhYPQVCpQez/0pivv1VYyVXLcRk8N5hgLPS+dhz3ARnYB6SUzH7rBObvAlQhEOWgpqeyOEGe6I7ImuSVgRw4SDxNvTEZcAk/vYTaqbAyJSo5lwXsbqLX8hIYK2s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=0668uK/g; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="0668uK/g" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1034BC19425; Wed, 13 May 2026 15:08:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778684940; bh=7eblvAvTMKWc4yibxOgfDSmJmWWXy4b1vXiqs2ciaqw=; h=From:To:Cc:Subject:Date:Reply-To:From; b=0668uK/gnmjDc4ENd7zaTMVJruk8ILdugotW/t2SuqClqDyWAsdo2NnXyoQk4dgTK qJgoYlg4xWfcXRfw1uWt1xuzP6jR5e5Xw56J06bf/eYnzNYvb/FRARaXHjRPlCq0e1 JZoO7SMIAaRnHJNbmfolN9m4kQB1JkWGqo9iyNaE= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-43488: usb: xhci: Prevent interrupt storm on host controller error (HCE) Date: Wed, 13 May 2026 17:08:56 +0200 Message-ID: <2026051350-CVE-2026-43488-ebef@gregkh> X-Mailer: git-send-email 2.54.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2927; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=pW+aFzgiYebuYhmKbSUyILqXlXjtI2oABAdXL6fg1GM=; b=owGbwMvMwCRo6H6F97bub03G02pJDFksU5jWHNlT+3WlN7fYcT2mH38vzozfO/lKH0PyH95ti 9/d7ctQ6YhlYRBkYpAVU2T5so3n6P6KQ4pehranYeawMoEMYeDiFICJTNzEMM/W3f5wpDpDXv4l 9rOJk0snXF54K4thweyr5WqJrjOYdP/NMrp4Unq7h1vgRwA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: usb: xhci: Prevent interrupt storm on host controller error (HCE) The xHCI controller reports a Host Controller Error (HCE) in UAS Storage Device plug/unplug scenarios on Android devices. HCE is checked in xhci_irq() function and causes an interrupt storm (since the interrupt isn’t cleared), leading to severe system-level faults. When the xHC controller reports HCE in the interrupt handler, the driver only logs a warning and assumes xHC activity will stop as stated in xHCI specification. An interrupt storm does however continue on some hosts even after HCE, and only ceases after manually disabling xHC interrupt and stopping the controller by calling xhci_halt(). Add xhci_halt() to xhci_irq() function where STS_HCE status is checked, mirroring the existing error handling pattern used for STS_FATAL errors. This only fixes the interrupt storm. Proper HCE recovery requires resetting and re-initializing the xHC. The Linux kernel CVE team has assigned CVE-2026-43488 to this issue. Affected and fixed versions =========================== Fixed in 6.6.130 with commit b2dd9abf8c06cfcbcf242321fd54ae51a4807705 Fixed in 6.12.78 with commit 6f91f3f087194c114d6d8ea4591b850bb00672f8 Fixed in 6.18.19 with commit cd41e0d1df8fcf5eae294657da52b50d1ce03246 Fixed in 6.19.9 with commit 09ff0099c6cf148ff1f7053b5b6c84beb1c2ef8d Fixed in 7.0 with commit d6d5febd12452b7fd951fdd15c3ec262f01901a4 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-43488 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/usb/host/xhci-ring.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/b2dd9abf8c06cfcbcf242321fd54ae51a4807705 https://git.kernel.org/stable/c/6f91f3f087194c114d6d8ea4591b850bb00672f8 https://git.kernel.org/stable/c/cd41e0d1df8fcf5eae294657da52b50d1ce03246 https://git.kernel.org/stable/c/09ff0099c6cf148ff1f7053b5b6c84beb1c2ef8d https://git.kernel.org/stable/c/d6d5febd12452b7fd951fdd15c3ec262f01901a4