Commit 777f1f25 authored May 17, 2017 by Sai Krishna Juturi Committed by Sriharsha Allenki Jul 25, 2019

usb : dwc3: Initialize kernel stack variables properly



If kernel stack variables are not initialized properly,
there  is a chance of kernel information disclosure.
So, initialize kernel stack variables with null characters.

CRs-fixed: 2042592
Change-Id: I213c0e5c7f67824c2cecace276ff2f8f81599d51
Signed-off-by: Sai Krishna Juturi <jsaikrishna@codeaurora.org>
Signed-off-by: Mayank Rana <mrana@codeaurora.org>
Signed-off-by: Sriharsha Allenki <sallenki@codeaurora.org>

parent 0b21d22f

drivers/usb/dwc3/debugfs.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -412,7 +412,7 @@ static ssize_t dwc3_testmode_write(struct file *file,
		struct dwc3 *dwc = s->private;
		unsigned long flags;
		u32 testmode = 0;
		char buf[32];
		char buf[32] = {};

		if (atomic_read(&dwc->in_lpm)) {
		seq_puts(s, "USB device is powered off\n");
		@@ -484,7 +484,7 @@ static ssize_t dwc3_link_state_write(struct file *file,
		struct dwc3 *dwc = s->private;
		unsigned long flags;
		enum dwc3_link_state state = 0;
		char buf[32];
		char buf[32] = {};

		if (atomic_read(&dwc->in_lpm)) {
		seq_puts(s, "USB device is powered off\n");