This is a note to let you know that I've just added the patch titled
drivers/ptp: Fix kernel memory disclosure
to the 4.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drivers-ptp-fix-kernel-memory-disclosure.patch
and it can be found in the queue-4.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Nov 10 16:43:03 CET 2016
From: Vlad Tsyrklevich <vlad@xxxxxxxxxxxxxxx>
Date: Tue, 11 Oct 2016 15:02:47 +0200
Subject: drivers/ptp: Fix kernel memory disclosure
From: Vlad Tsyrklevich <vlad@xxxxxxxxxxxxxxx>
[ Upstream commit 02a9079c66341836c4914c33c06a73245060df2e ]
The reserved field precise_offset->rsv is not cleared before being
copied to user space, leaking kernel stack memory. Clear the struct
before it's copied.
Signed-off-by: Vlad Tsyrklevich <vlad@xxxxxxxxxxxxxxx>
Acked-by: Richard Cochran <richardcochran@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/ptp/ptp_chardev.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/ptp/ptp_chardev.c
+++ b/drivers/ptp/ptp_chardev.c
@@ -193,6 +193,7 @@ long ptp_ioctl(struct posix_clock *pc, u
if (err)
break;
+ memset(&precise_offset, 0, sizeof(precise_offset));
ts = ktime_to_timespec64(xtstamp.device);
precise_offset.device.sec = ts.tv_sec;
precise_offset.device.nsec = ts.tv_nsec;
Patches currently in stable-queue which might be from vlad@xxxxxxxxxxxxxxx are
queue-4.8/drivers-ptp-fix-kernel-memory-disclosure.patch
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