This bug was fixed in the package linux - 4.8.0-52.55
---------------
linux (4.8.0-52.55) yakkety; urgency=low
* linux: 4.8.0-52.55 -proposed tracker (LP: #1686976)
* CVE-2017-7477: macsec: avoid heap overflow in skb_to_sgvec (LP: #1685892)
- macsec: avoid heap overflow in skb_to_sgvec
- macsec: dynamically allocate space for sglist
* net/ipv4: original ingress device index set as the loopback interface.
(LP: #1683982)
- net: fix incorrect original ingress device index in PKTINFO
* Touchpad not working correctly after kernel upgrade (LP: #1662589)
- Input: ALPS - fix V8+ protocol handling (73 03 28)
* ifup service of network device stay active after driver stop (LP: #1672144)
- net: use net->count to check whether a netns is alive or not
* [Hyper-V] mkfs regression in kernel 4.4+ (LP: #1682215)
- block: relax check on sg gap
* Potential memory corruption with capi adapters (LP: #1681469)
- powerpc/mm: Add missing global TLB invalidate if cxl is active
* [Hyper-V/Azure] Please include Mellanox OFED drivers in Azure kernel and
image (LP: #1650058)
- net/mlx4_en: Fix bad WQE issue
- net/mlx4_core: Fix racy CQ (Completion Queue) free
- net/mlx4_core: Fix when to save some qp context flags for dynamic VST to
VGT
transitions
- net/mlx4_core: Avoid command timeouts during VF driver device shutdown
-- Stefan Bader <[email protected]> Fri, 28 Apr 2017 12:17:12
+0200
** Changed in: linux (Ubuntu Yakkety)
Status: Fix Committed => Fix Released
** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2017-7477
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https://bugs.launchpad.net/bugs/1681469
Title:
Potential memory corruption with capi adapters
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Xenial:
Fix Committed
Status in linux source package in Yakkety:
Fix Released
Status in linux source package in Zesty:
Fix Committed
Status in linux source package in Artful:
Fix Released
Bug description:
== Comment: #0 - Frederic Barrat <[email protected]> -
2017-04-10 04:44:01 ==
---Problem Description---
Memory corruption can be seen when using a capi adapter. It can happen if the
host process allocates/frees/reallocates memory areas used by the the capi
adapter.
Some TLB invalidations may not be propagated to the capi adapter, causing the
corruption.
Contact Information = [email protected]
---uname output---
Linux garri 4.4.0-72-generic #93-Ubuntu SMP Fri Mar 31 14:05:15 UTC 2017
ppc64le ppc64le ppc64le GNU/Linux
---Additional Hardware Info---
capi card needed, with the AFU image used by libdonut development
Machine Type = Tuleta
---Debugger---
A debugger is not configured
---Steps to Reproduce---
Run libdonut in a loop, until corruption is seen. Host process will dump core
Stack trace output:
no
Oops output:
no
System Dump Info:
The system is not configured to capture a system dump.
*Additional Instructions for [email protected]:
-Attach sysctl -a output output to the bug.
== Comment: #1 - Frederic Barrat <[email protected]> - 2017-04-10
04:45:19 ==
Fix is already upstream:
commit 88b1bf7268f56887ca88eb09c6fb0f4fc970121a
Author: Frederic Barrat <[email protected]>
Date: Wed Mar 29 19:19:42 2017 +0200
powerpc/mm: Add missing global TLB invalidate if cxl is active
Could it be backported to the 16.04 LTS release, as well as 17.04?
Thanks
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