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Commit ffeee83a authored by Heinrich Schuchardt's avatar Heinrich Schuchardt Committed by Felipe Balbi
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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: 132fcb46 ("usb: gadget: Add Audio Class 2.0 Driver")
Signed-off-by: default avatarHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 23e34392

drivers/usb/gadget/function/f_uac2.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -1280,6 +1280,7 @@ in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) 




	if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) {

	if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) {

		struct cntrl_cur_lay3 c;

		struct cntrl_cur_lay3 c;

		memset(&c, 0, sizeof(struct cntrl_cur_lay3));





		if (entity_id == USB_IN_CLK_ID)

		if (entity_id == USB_IN_CLK_ID)

			c.dCUR = p_srate;

			c.dCUR = p_srate;