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Date: Sat, 6 Nov 2010 17:41:35 +0300 From: Vasiliy Kulikov <segooon@...il.com> To: kernel-janitors@...r.kernel.org Cc: Thomas Winischhofer <thomas@...ischhofer.net>, Greg Kroah-Hartman <gregkh@...e.de>, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH] 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@...il.com> --- Compile tested. drivers/usb/misc/sisusbvga/sisusb.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c index 70d00e9..dd573ab 100644 --- a/drivers/usb/misc/sisusbvga/sisusb.c +++ b/drivers/usb/misc/sisusbvga/sisusb.c @@ -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; -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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