PTF Cover Letter
PTF ( Program Temporary Fixes ) Cover letter
LIC Spectre and Meltdown speculation barrier functions
Pre/Co-Requisite PTF / Fix List
REQ LICENSED PTF/FIX LEVEL
TYPE PROGRAM RELEASE NUMBER MIN/MAX OPTION
---- -------- --------- ------- ------- ------
PRE 5770999 V7R2M0 MF65232 00/00 0000
PRE 5770999 V7R2M0 MF64642 00/00 0000
PRE 5770999 V7R2M0 MF64598 00/00 0000
PRE 5770999 V7R2M0 MF64552 00/00 0000
NOTICE:
-------
Application of this PTF may disable or render ineffective programs that
use system memory addresses not generated by the IBM translator,
including programs that circumvent control technology designed to limit
interactive capacity to purchased levels. This PTF may be a prerequisite
for future PTFs. By applying this PTF you authorize and agree to the
foregoing.
This PTF is subject to the terms of the 'IBM License Agreement for Machine
Code', the terms of which were provided in a printed document that was
delivered with the machine.
SUBJECT TO ANY WARRANTIES WHICH CAN NOT BE EXCLUDED OR EXCEPT AS EXPLICITLY
AGREED TO IN THE APPLICABLE LICENSE AGREEMENT OR AN APPLICABLE SUPPORT
AGREEMENT, IBM MAKES NO WARRANTIES OR CONDITIONS EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON INFRINGEMENT,
REGARDING THE PTF.
APAR Error Description / Circumvention
-----------------------------------------------
IBM has released this PTF in response to CVE-2017-5753,
CVE-2017-5715, CVE-2017-5754, and CVE-2018-3639.
CORRECTION FOR APAR MA47093 :
-----------------------------
The Licensed Internal Code will be updated to support customer
callable functions that can be used to help mitigate
Spectre/Meltdown vulnerabilities. The new functions can be
called using the SYNCSTG machine interface instruction and
provide barriers against hardware speculation. If a program
that uses any of these new capabilities is moved to a different
system, the target system must include all the latest
Spectre/Meltdown PTFs and firmware patches. Failure to do so
may result in one of the following:
1. Failure to provide any machine speculation protection.
2. Failure to provide an application barrier.
3. MSGMCH6801, type=1, may be generated when the program runs.
4. MSGMCH4245, reason code 3, or MSGMCH4227, reason code 7, may
be generated when the program is created or converted.
5. MSGCPF3888 may be generated if a program is restored and
program conversion is needed.
See the IBM i Security Bulletin for a list of all previously
released PTFs and firmware patches needed to mitigate
Spectre/Meltdown vulnerabilities:
www.ibm.com/support/docview.wss?uid=nas8N1022433
CIRCUMVENTION FOR APAR MA47093 :
--------------------------------
None.
Activation Instructions
None.
Special Instructions
None.
Default Instructions
THIS IS A DELAYED PTF TO BE APPLIED AT IPL TIME.
Supersedes
PTF/FIX NO(S). APAR TITLE LINE
-------------- ------------------------------------------------------------
MF64985 LIC MITIGATE SPECTRE AND MELTDOWN VULNERABILITIES
MF64697 LIC MITIGATE SPECTRE AND MELTDOWN VULNERABILITIES
MF64601 LIC MITIGATE SPECTRE AND MELTDOWN VULNERABILITIES
MF64565 LIC MITIGATE SPECTRE AND MELTDOWN VULNERABILITIES
Summary Information
System.............................. | i |
Models.............................. | |
Release............................. | V7R2M0 |
Licensed Program............... | 5770999 |
APAR Fixed.......................... | View details for APAR MA47093 |
Superseded by:...................... | View fix details for PTF MF68096 |
Recompile........................... | N |
Library............................. | QSYS |
MRI Feature ........................ | NONE |
Cum Level........................... | C9123720 |
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Modified date:
19 November 2020