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usb: image: mdc800: change kmalloc() to kzalloc()

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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 <stable@kernel.org>
Signed-off-by: Griffin Kroah-Hartman <griffin@kroah.com>
Link: https://patch.msgid.link/20260819-usb_misc_random-v1-1-43a0dcee3a32@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Griffin Kroah-Hartman
2026-08-19 12:04:25 +02:00
committed by Greg Kroah-Hartman
parent cd3b9cea67
commit 2430eb81e4
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/image/mdc800.c
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@@ -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;