Commit 5dc92cf1 authored Nov 06, 2010 by Vasiliy Kulikov Committed by Greg Kroah-Hartman Nov 11, 2010

usb: misc: sisusbvga: fix information leak to userland



Structure sisusb_info is copied to userland with "sisusb_reserved" field
uninitialized.  It leads to leaking of contents of kernel stack memory.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent 28609d40

drivers/usb/misc/sisusbvga/sisusb.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -3008,6 +3008,7 @@ sisusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
		#else
		x.sisusb_conactive = 0;
		#endif
		memset(x.sisusb_reserved, 0, sizeof(x.sisusb_reserved));

		if (copy_to_user((void __user *)arg, &x, sizeof(x)))
		retval = -EFAULT;