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usb: gadget: avoid exposing kernel stack 

Function in_rq_cur copies random bytes from the stack.
Zero the memory instead.

Fixes: 132fcb4608 ("usb: gadget: Add Audio Class 2.0 Driver")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Heinrich Schuchardt 2016-05-08 23:20:59 +02:00 committed by Felipe Balbi
parent 23e3439296
commit ffeee83aa0
1 changed files with 1 additions and 0 deletions
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1
drivers/usb/gadget/function/f_uac2.c
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@ -1280,6 +1280,7 @@ in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr)
if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) {
struct cntrl_cur_lay3 c;
memset(&c, 0, sizeof(struct cntrl_cur_lay3));
if (entity_id == USB_IN_CLK_ID)
c.dCUR = p_srate;