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USB: gadget: Read buffer overflow

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Check whether index is within bounds before testing the element.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Roel Kluin 2009-08-06 16:09:51 -07:00 • committed by Greg Kroah-Hartman
parent d0defb855c
commit 417b57b3e4
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/composite.c
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@ -602,7 +602,7 @@ static int get_string(struct usb_composite_dev *cdev,
} }
} }
for (len = 0; s->wData[len] && len <= 126; len++) for (len = 0; len <= 126 && s->wData[len]; len++)
continue; continue;
if (!len) if (!len)
return -EINVAL; return -EINVAL;