From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 6FF8D47886E; Sat, 12 Sep 2026 11:35:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789212925; cv=none; b=AbCoK6948Feb13Fc8d/xHRmkKCo8ade/CCzTpYQrZ/C51yCIJ8wpv6xAEDdCuPEanb4grga6FbVYqB0ZNN4dQWr25E/G4emtyHmjuMrL+fgAg2sAgRiWK/PVXPR3yg0ExM+iiSkMyDyRBriVKCpPu28YzYH3S4k77wEjrzOlSGg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789212925; c=relaxed/simple; bh=bBf7r99mUrZ60EzuJCJgaVnIgDIqmmgPDapoOLeAfYs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VRlj28CH7vdmS8byAaDhqedqMmvJvcXSUwAJklnG5onT24LLe6u6ckKzFbRdZW6dGyGtzAH4+EYyPjb7L68+xlUpZE7m3RpRW6ODaEkO8y4Tijm/42x1amfW7vXSita7XNGGtMu/4TMRhnFW/0Maz35FvGYeKIuKk1qxmXlv3w4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=IKqEmYi0; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="IKqEmYi0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2A3981F000FF; Sat, 12 Sep 2026 11:35:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789212921; bh=yb4A5WQypsTmgqeEYqqF+cNSGCLbtmjBMlrvVD98kDo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=IKqEmYi0UcORD6qvukW9/K6OfExELKD9bNtBCp456aVpAfSC3VpX+VcfJHM9BBwdt fc7Xu0fr41F6xaDLZtgv/ZooRZDASBPlJr+m7JCmrnBqe0pAeo2DQc06K1m3CVMQuU +8JYyc1DiWYDD5bJ2fSwFcfV897fv+SP5B07JLrI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Griffin Kroah-Hartman Subject: [PATCH 6.12 0017/1376] usb: image: mdc800: change kmalloc() to kzalloc() Date: Sat, 12 Sep 2026 08:40:43 +0200 Message-ID: <20260912065607.933380342@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065607.535295758@linuxfoundation.org> References: <20260912065607.535295758@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Griffin Kroah-Hartman commit 2430eb81e44111b30eeb5273bbcf8b24ca517ef9 upstream. Change the kmalloc() calls in usb_mdc800_init() for irq_urb_buffer and download_urb_buffer to kzalloc(), avoiding potential stack leaks if a shorter message is received in mdc800_usb_irq() and mdc800_usb_download_notify() Assisted-by: gkh_clanker_t1000 Cc: stable Signed-off-by: Griffin Kroah-Hartman Link: https://patch.msgid.link/20260819-usb_misc_random-v1-1-43a0dcee3a32@kroah.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/image/mdc800.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/usb/image/mdc800.c +++ b/drivers/usb/image/mdc800.c @@ -1000,13 +1000,13 @@ static int __init usb_mdc800_init (void) mdc800->downloaded = 0; mdc800->written = 0; - mdc800->irq_urb_buffer=kmalloc (8, GFP_KERNEL); + mdc800->irq_urb_buffer=kzalloc (8, GFP_KERNEL); if (!mdc800->irq_urb_buffer) goto cleanup_on_fail; mdc800->write_urb_buffer=kmalloc (8, GFP_KERNEL); if (!mdc800->write_urb_buffer) goto cleanup_on_fail; - mdc800->download_urb_buffer=kmalloc (64, GFP_KERNEL); + mdc800->download_urb_buffer=kzalloc (64, GFP_KERNEL); if (!mdc800->download_urb_buffer) goto cleanup_on_fail;