Bug 1646768 (CVE-2018-12207) - CVE-2018-12207 hw: Machine Check Error on Page Size Change (IFU)
Summary: CVE-2018-12207 hw: Machine Check Error on Page Size Change (IFU)
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-12207
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1690343 1690344 1690345 1690346 1766964 1690334 1690347 1692385 1692596 1698408 1698409 1698410 1698411 1698412 1698413 1698414 1698415 1698416 1698417 1707269 1733009 1733010 1762993 1766965 1766977 1766978 1766987 1768306 1768307 1768308 1768309 1771645 1779250
Blocks: 1709291 1750329 1750330 1750331 1750332 1750333 1750334 1752312
TreeView+ depends on / blocked
 
Reported: 2018-11-06 01:21 UTC by Wade Mealing
Modified: 2020-01-06 14:41 UTC (History)
86 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the way Intel CPUs handle inconsistency between, virtual to physical memory address translations in CPU's local cache and system software's Paging structure entries. A privileged guest user may use this flaw to induce a hardware Machine Check Error on the host processor, resulting in a severe DoS scenario by halting the processor. System software like OS OR Virtual Machine Monitor (VMM) use virtual memory system for storing program instructions and data in memory. Virtual Memory system uses Paging structures like Page Tables and Page Directories to manage system memory. The processor's Memory Management Unit (MMU) uses Paging structure entries to translate program's virtual memory addresses to physical memory addresses. The processor stores these address translations into its local cache buffer called - Translation Lookaside Buffer (TLB). TLB has two parts, one for instructions and other for data addresses. System software can modify its Paging structure entries to change address mappings OR certain attributes like page size etc. Upon such Paging structure alterations in memory, system software must invalidate the corresponding address translations in the processor's TLB cache. But before this TLB invalidation takes place, a privileged guest user may trigger an instruction fetch operation, which could use an already cached, but now invalid, virtual to physical address translation from Instruction TLB (ITLB). Thus accessing an invalid physical memory address and resulting in halting the processor due to the Machine Check Error (MCE) on Page Size Change.
Clone Of:
Environment:
Last Closed: 2019-11-13 00:51:11 UTC


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Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2019:3866 None None None 2019-11-13 15:53:27 UTC
Red Hat Product Errata RHBA-2019:3886 None None None 2019-11-14 15:29:55 UTC
Red Hat Product Errata RHBA-2019:4120 None None None 2019-12-09 21:41:30 UTC
Red Hat Product Errata RHSA-2019:3832 None None None 2019-11-12 19:53:57 UTC
Red Hat Product Errata RHSA-2019:3833 None None None 2019-11-12 19:08:52 UTC
Red Hat Product Errata RHSA-2019:3834 None None None 2019-11-12 20:46:58 UTC
Red Hat Product Errata RHSA-2019:3835 None None None 2019-11-12 19:25:30 UTC
Red Hat Product Errata RHSA-2019:3836 None None None 2019-11-12 20:57:10 UTC
Red Hat Product Errata RHSA-2019:3837 None None None 2019-11-12 20:44:47 UTC
Red Hat Product Errata RHSA-2019:3838 None None None 2019-11-12 20:45:47 UTC
Red Hat Product Errata RHSA-2019:3839 None None None 2019-11-12 21:33:36 UTC
Red Hat Product Errata RHSA-2019:3840 None None None 2019-11-12 21:19:06 UTC
Red Hat Product Errata RHSA-2019:3841 None None None 2019-11-12 20:58:51 UTC
Red Hat Product Errata RHSA-2019:3842 None None None 2019-11-12 21:09:18 UTC
Red Hat Product Errata RHSA-2019:3843 None None None 2019-11-12 21:10:17 UTC
Red Hat Product Errata RHSA-2019:3844 None None None 2019-11-12 21:07:40 UTC
Red Hat Product Errata RHSA-2019:3860 None None None 2019-11-12 20:10:43 UTC
Red Hat Product Errata RHSA-2019:3916 None None None 2019-11-19 15:56:40 UTC
Red Hat Product Errata RHSA-2019:3936 None None None 2019-11-20 20:50:45 UTC
Red Hat Product Errata RHSA-2019:3941 None None None 2019-11-21 09:55:37 UTC
Red Hat Product Errata RHSA-2020:0026 None None None 2020-01-06 14:12:38 UTC
Red Hat Product Errata RHSA-2020:0028 None None None 2020-01-06 14:41:00 UTC

Description Wade Mealing 2018-11-06 01:21:12 UTC
A flaw was found in computer hardware of the Intel microprocessors related to the instruction-side TLB (Translation Lookaside Buffer) that caches translations from guest (and host) virtual addresses into physical addresses.  

This is a software fix that attempts to prevent exploitation of the hardware through preventing a hacker from creating an exploitable condition



Additional information:

https://access.redhat.com/security/vulnerabilities/ifu-page-mce

Comment 11 Wade Mealing 2019-05-06 10:36:42 UTC
Statement:

Red Hat Product Security is aware of this issue. Updates will be released as they become available. For additional information, please refer to the Red Hat Knowledgebase article: https://access.redhat.com/security/vulnerabilities/ifu-page-mce

Comment 28 Wade Mealing 2019-11-12 08:30:55 UTC
Acknowledgements:

The following issue was found internally by Intel, Intel would like to thank Deepak Gupta.

Comment 31 Prasad J Pandit 2019-11-12 18:07:45 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1771645]

Comment 33 errata-xmlrpc 2019-11-12 19:08:49 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3833 https://access.redhat.com/errata/RHSA-2019:3833

Comment 34 errata-xmlrpc 2019-11-12 19:25:26 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:3835 https://access.redhat.com/errata/RHSA-2019:3835

Comment 35 errata-xmlrpc 2019-11-12 19:53:53 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3832 https://access.redhat.com/errata/RHSA-2019:3832

Comment 36 errata-xmlrpc 2019-11-12 20:10:39 UTC
This issue has been addressed in the following products:

  Red Hat Virtualization 4.2 for Red Hat Enterprise Linux 7.6 EUS
  Red Hat Virtualization 4 for Red Hat Enterprise Linux 7

Via RHSA-2019:3860 https://access.redhat.com/errata/RHSA-2019:3860

Comment 37 errata-xmlrpc 2019-11-12 20:44:44 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.6 Extended Update Support

Via RHSA-2019:3837 https://access.redhat.com/errata/RHSA-2019:3837

Comment 38 errata-xmlrpc 2019-11-12 20:45:43 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.5 Extended Update Support

Via RHSA-2019:3838 https://access.redhat.com/errata/RHSA-2019:3838

Comment 39 errata-xmlrpc 2019-11-12 20:46:54 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:3834 https://access.redhat.com/errata/RHSA-2019:3834

Comment 40 errata-xmlrpc 2019-11-12 20:57:06 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2019:3836 https://access.redhat.com/errata/RHSA-2019:3836

Comment 41 errata-xmlrpc 2019-11-12 20:58:48 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.2 Telco Extended Update Support
  Red Hat Enterprise Linux 7.2 Advanced Update Support
  Red Hat Enterprise Linux 7.2 Update Services for SAP Solutions

Via RHSA-2019:3841 https://access.redhat.com/errata/RHSA-2019:3841

Comment 42 errata-xmlrpc 2019-11-12 21:07:36 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise MRG 2

Via RHSA-2019:3844 https://access.redhat.com/errata/RHSA-2019:3844

Comment 43 errata-xmlrpc 2019-11-12 21:09:14 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.6 Advanced Update Support

Via RHSA-2019:3842 https://access.redhat.com/errata/RHSA-2019:3842

Comment 44 errata-xmlrpc 2019-11-12 21:10:14 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.5 Advanced Update Support

Via RHSA-2019:3843 https://access.redhat.com/errata/RHSA-2019:3843

Comment 45 errata-xmlrpc 2019-11-12 21:19:02 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.3 Telco Extended Update Support
  Red Hat Enterprise Linux 7.3 Advanced Update Support
  Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions

Via RHSA-2019:3840 https://access.redhat.com/errata/RHSA-2019:3840

Comment 46 errata-xmlrpc 2019-11-12 21:33:33 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.4 Advanced Update Support
  Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions
  Red Hat Enterprise Linux 7.4 Telco Extended Update Support

Via RHSA-2019:3839 https://access.redhat.com/errata/RHSA-2019:3839

Comment 47 Product Security DevOps Team 2019-11-13 00:51:11 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-12207

Comment 48 Wade Mealing 2019-11-13 01:55:07 UTC
Mitigation:

For mitigation related information, please refer to the Red Hat vulnerability article: https://access.redhat.com/security/vulnerabilities/ifu-page-mce .

Comment 50 errata-xmlrpc 2019-11-19 15:56:35 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.2

Via RHSA-2019:3916 https://access.redhat.com/errata/RHSA-2019:3916

Comment 54 errata-xmlrpc 2019-11-20 20:50:41 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3936 https://access.redhat.com/errata/RHSA-2019:3936

Comment 55 errata-xmlrpc 2019-11-21 09:55:30 UTC
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.1

Via RHSA-2019:3941 https://access.redhat.com/errata/RHSA-2019:3941

Comment 71 errata-xmlrpc 2020-01-06 14:12:30 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.6 Extended Update Support

Via RHSA-2020:0026 https://access.redhat.com/errata/RHSA-2020:0026

Comment 72 errata-xmlrpc 2020-01-06 14:40:52 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:0028 https://access.redhat.com/errata/RHSA-2020:0028


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