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Security Bulletin: IBM i has released PTFs in response to the vulnerabilities known as Spectre and Meltdown.

Security Bulletin


IBM has released the following IBM i PTFs in response to CVE-2017-5753, CVE-2017-5715 and CVE-2017-5754.

This security bulletin has been updated as additional IBM i PTFs are now available to mitigate the Spectre and Meltdown vulnerabilities.

Vulnerability Details

Affected Products and Versions

PTFs are available for releases 7.1, 7.2 and 7.3 of the IBM i operating system.


See Workarounds and Mitigations below.

Workarounds and Mitigations

Releases 7.1, 7.2 and 7.3 of the IBM i operating system are supported and the vulnerabilities associated with the applicable CVEs will be mitigated by applying all of the applicable PTFs listed below.

The IBM i PTFs listed in this Security Bulletin can be loaded and applied independently of the Power FW fixes that have been created to address the Spectre and Meltdown vulnerabilities. Both the IBM i and Power Firmware fixes are required to mitigate the vulnerabilities. If the IBM i PTFs are applied before the Power Firmware fixes, then mitigations for the IBM i LPAR may not become effective until Power Firmware fixes are applied and an Initial Program Load (IPL) or Live Partition Mobility (LPM) operation for the IBM i LPAR is completed.

Link to the related Power Firmware Security Bulletin and fix information:

The IBM i PTF numbers are:

PTFs released on February 8, 2018

Note: Please review the Power Firmware Security bulletin available via the link provided for information related to recently released Power Firmware fixes required to mitigate the vulnerabilities.

The IBM i PTFs released on February 8, 2018, in combination with the recent Power Firmware fixes, are required to mitigate vulnerabilities on all Power 7, Power 7+, and Power 8 hardware models that run the IBM i operating system.

Release 7.1 - MF64599, MF64602, MF64603, MF64604, MF64609, MF64612, MF64615, MF64616, MF64617, MF64618, MF64619, MF64620

Release 7.2 - MF64598, MF64601, MF64607, MF64611, MF64614

Release 7.3 - MF64597, MF64600, MF64605, MF64610, MF64613

PTFs released on January 26, 2018

The PTFs released on January 26, 2018 are required to mitigate the vulnerabilities on all Power 8 hardware models that run the IBM i operating system. The PTFs can be loaded on all other Power HW models but they are not required to mitigate the vulnerabilities. Additional PTFs addressing other hardware models will be released as they become available.

Release 7.1 – MF64571
Release 7.2 – MF64565
Release 7.3 – MF64568

PTFs released on January 10, 2018

Release 7.1 – MF64553
Release 7.2 – MF64552
Release 7.3 – MF64551

Important note: IBM recommends that all users running unsupported versions of affected products upgrade to supported and fixed version of affected products.

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Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Cross reference information
Segment Product Component Platform Version Edition
Operating System IBM i 7.1
Operating System IBM i 7.2
Operating System IBM i 7.3

Document information

More support for: IBM i

Software version: 7.1, 7.2, 7.3

Operating system(s): IBM i

Reference #: N1022433

Modified date: 09 February 2018

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