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 0F0023F0A95 for ; Fri, 8 May 2026 14:26:34 +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=1778250395; cv=none; b=LtdMe60bIz6AIpkQo34oUA/u/BAHZ7loT42mKVXAOR8scWQo3lrPAjdvnuLvcmtcs+/jUaPqIDHD9bt0eeVbS/QGU7tHPDfuzpotH4BbdZ+XTN/QtRzZ0U1R5o6ycGPTxWTv8QXRzhsMLl+yAzWlRwT88VvRBHxRZALVyXh51B0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778250395; c=relaxed/simple; bh=FNW2ZHalqHKk1ws9UZNjppat86/HEEH6bFHptRhc9NI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=j4CcZVCfOuqLuc1Mc7kReQR2HH/SdiFUS7OQ+MWEJMJtqTw73r7Oc8E+zrh0GiYxrvVFi351r9wLyAunOkoCjGxPi05S+5X5d4EhyvGltyjkKMbSKYgOtpali077ErgIsHGwJ8p75XbrUTf44dhf/LvpJLejKje4K89ka6asSWw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=W/CFrKBq; 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="W/CFrKBq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D2EFC2BCB0; Fri, 8 May 2026 14:26:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778250394; bh=FNW2ZHalqHKk1ws9UZNjppat86/HEEH6bFHptRhc9NI=; h=From:To:Cc:Subject:Date:Reply-To:From; b=W/CFrKBq7sYjNP43R9b4ydrswGzyLTCLkD6N5/cmQjYQBDPlJTVhPXpYWs5viKBTo QlhWM2+e6ozgwu8ksEr5ZVI2GdzvWVB6EtkSde9qPOO7RapdAsUbBOK3rBusCsbCcC 5LSVB5W2XHHObx0EQ6smAuMyS9Raz+YVFELhu7/w= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-43426: usb: renesas_usbhs: fix use-after-free in ISR during device removal Date: Fri, 8 May 2026 16:22:35 +0200 Message-ID: <2026050849-CVE-2026-43426-eef1@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=3655; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=+xF0gEUjVsECtSf+oDPFVMBXsyJwWm58mbG5YekE12s=; b=owGbwMvMwCRo6H6F97bub03G02pJDJl/P9bOWDoj+fU9Hd7HMpq+bZkXS6urinYv7YjxWXRx6 QfvbIHmjlgWBkEmBlkxRZYv23iO7q84pOhlaHsaZg4rE8gQBi5OAZhI5DaGBbOWTn+59+VZRRa9 phDhglvP+oRn6zHMr26Zx2bMM8vuwKzWy6lsjb/tzlrXAwA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: usb: renesas_usbhs: fix use-after-free in ISR during device removal In usbhs_remove(), the driver frees resources (including the pipe array) while the interrupt handler (usbhs_interrupt) is still registered. If an interrupt fires after usbhs_pipe_remove() but before the driver is fully unbound, the ISR may access freed memory, causing a use-after-free. Fix this by calling devm_free_irq() before freeing resources. This ensures the interrupt handler is both disabled and synchronized (waits for any running ISR to complete) before usbhs_pipe_remove() is called. The Linux kernel CVE team has assigned CVE-2026-43426 to this issue. Affected and fixed versions =========================== Issue introduced in 3.0 with commit f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 and fixed in 5.10.253 with commit c7012fc73dab4829404fedeeaa8531f12ac8545f Issue introduced in 3.0 with commit f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 and fixed in 5.15.203 with commit 51afaf919bbaacdd9cc9e146033ae0a743a42dd7 Issue introduced in 3.0 with commit f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 and fixed in 6.1.167 with commit 1899edac312ef17a7234851686e8a703f56d0a84 Issue introduced in 3.0 with commit f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 and fixed in 6.6.130 with commit 9c6159d5b72d5fc265cce5da04f27d730b552e69 Issue introduced in 3.0 with commit f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 and fixed in 6.12.78 with commit 6287e0c01ccb818e7214f88d885ffb7c9e81b0e0 Issue introduced in 3.0 with commit f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 and fixed in 6.18.19 with commit 0b7d11fd6e742ecc0b1eca44b4f0b93140c74bae Issue introduced in 3.0 with commit f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 and fixed in 6.19.9 with commit 6ffe44f022c95b1b29c691d2169c5abc046f7580 Issue introduced in 3.0 with commit f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 and fixed in 7.0 with commit 3cbc242b88c607f55da3d0d0d336b49bf1e20412 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-2026-43426 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/renesas_usbhs/common.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/c7012fc73dab4829404fedeeaa8531f12ac8545f https://git.kernel.org/stable/c/51afaf919bbaacdd9cc9e146033ae0a743a42dd7 https://git.kernel.org/stable/c/1899edac312ef17a7234851686e8a703f56d0a84 https://git.kernel.org/stable/c/9c6159d5b72d5fc265cce5da04f27d730b552e69 https://git.kernel.org/stable/c/6287e0c01ccb818e7214f88d885ffb7c9e81b0e0 https://git.kernel.org/stable/c/0b7d11fd6e742ecc0b1eca44b4f0b93140c74bae https://git.kernel.org/stable/c/6ffe44f022c95b1b29c691d2169c5abc046f7580 https://git.kernel.org/stable/c/3cbc242b88c607f55da3d0d0d336b49bf1e20412