* [PATCH] hpet: Fix a small information leak
@ 2020-05-12 6:14 Allen Pais
0 siblings, 0 replies; only message in thread
From: Allen Pais @ 2020-05-12 6:14 UTC (permalink / raw)
To: clemens; +Cc: linux-kernel, Allen Pais
hpet_info has a hole in it cause of which
we might end up leaking a few bytes.
Zero them with memset().
Fixes: 54066a57c584 ("hpet: kill BKL, add compat_ioctl")
Signed-off-by: Allen Pais <allen.lkml@gmail.com>
---
drivers/char/hpet.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index ed3b7dab678d..d9592eb24635 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -667,6 +667,7 @@ hpet_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
struct hpet_info info;
int err;
+ memset(&info, 0, sizeof(info));
mutex_lock(&hpet_mutex);
err = hpet_ioctl_common(file->private_data, cmd, arg, &info);
mutex_unlock(&hpet_mutex);
--
2.17.1
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