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 D9AFE32D7F8; Sat, 12 Sep 2026 18:21:57 +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=1789237318; cv=none; b=QhMc8k2zIjqAHhFsBz/TSyLGvOQLjgNUixyCJaJyjrtK/rXbIg6dmJS/AVraC1g3jL7bhuOPmr7qFOzc9G1R+BZU8p5r3mZ1F3UAfNGxzEsW04SDcaN6+hT0r6s5hMKDPTRuiDbtqy11el3C+miAsGc9cB/rQjbn5JXedZvckas= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789237318; c=relaxed/simple; bh=ldjt+Oz/lyPnEY5oLH6OR4Imjo97YjN9D0xbVIAZLR8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=GbDsuJ6dpL4Wd4z/bAWXkC6kBTeQWlMHkjEVP2cUbuVbex/52rTS/3Rzmyt33Y7yyM5jZZkglagt9PGyrIA4URiU4F2X8Db6/HfToa/UwvZ+syVzVp9RkXNzZUSA++S8jC2XtwZ8sbXfdRQ9Xj3h3bzPZzi2jnFeEqaBF/q+Jbw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ZQI1yqGe; 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="ZQI1yqGe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DFAA51F000FF; Sat, 12 Sep 2026 18:21:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789237317; bh=ElUrghWfM14NnEEkYUes4UqLx/gER7EvMLbMncL1QzE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ZQI1yqGeGHvIAKsqJfeD89cFQfLLzrjFZHdKNAn1c3aPFOdTKEUNsPvsNinH1IxN4 J1yA1AkQf+pP7TKFzM7CIgfOAjOB70pJjHcYmc1OQ4Ab7Ysn5TzuaKtTH3omwsY/LF 0BWm72ihGgpyd6V1DPvUxUGtP4A0AmFk3ZB0fA+4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Griffin Kroah-Hartman Subject: [PATCH 5.15 234/935] usb: image: mdc800: change kmalloc() to kzalloc() Date: Sat, 12 Sep 2026 08:54:24 +0200 Message-ID: <20260912065532.195823791@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065526.833703348@linuxfoundation.org> References: <20260912065526.833703348@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 5.15-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 @@ -1001,13 +1001,13 @@ 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;