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Commit 9ee81443 authored by Dan Carpenter's avatar Dan Carpenter Committed by Greg Kroah-Hartman
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staging: wilc1000: prevent some overflows in debugfs 



Add some limits here so we don't corrupt memory.

Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d35ebe80

drivers/staging/wilc1000/wilc_debugfs.c

+6 −0
Original line number Diff line number Diff line
@@ -53,6 +53,9 @@ static ssize_t wilc_debug_level_write(struct file *filp, const char *buf, size_t 
	char buffer[128] = {};

	int flag = 0;



	if (count > sizeof(buffer))

		return -EINVAL;



	if (copy_from_user(buffer, buf, count)) {

		return -EFAULT;

	}
@@ -99,6 +102,9 @@ static ssize_t wilc_debug_region_write(struct file *filp, const char *buf, size_ 
	char buffer[128] = {};

	int flag;



	if (count > sizeof(buffer))

		return -EINVAL;



	if (copy_from_user(buffer, buf, count)) {

		return -EFAULT;

	}