Bug 1519781 - (CVE-2017-5754, Meltdown) CVE-2017-5754 hw: cpu: speculative execution permission faults handling
CVE-2017-5754 hw: cpu: speculative execution permission faults handling
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
impact=important,public=20180103:2200...
: Security
Depends On: 1519801 1519802 1527476 1527482 1527483 1527484 1530826 1531357 1532049 1532050 1532074 1532077 1537521 1519799 1519800 1526964 1526965 1526966 1526967 1526968 1526969 1526970 1527477 1527478 1527479 1527480 1527481 1531562
Blocks: 1516900
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Reported: 2017-12-01 08:01 EST by Petr Matousek
Modified: 2018-02-19 01:20 EST (History)
72 users (show)

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Fixed In Version:
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Doc Text:
An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5754 relies on the fact that, on impacted microprocessors, during speculative execution of instruction permission faults, exception generation triggered by a faulting access is suppressed until the retirement of the whole instruction block. In a combination with the fact that memory accesses may populate the cache even when the block is being dropped and never committed (executed), an unprivileged local attacker could use this flaw to read privileged (kernel space) memory by conducting targeted cache side-channel attacks. Note: CVE-2017-5754 affects Intel x86-64 microprocessors. AMD x86-64 microprocessors are not affected by this issue.
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Clone Of: CVE-2017-5715
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RHEL 7.3 requirements from Atomic Host:
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Description Petr Matousek 2017-12-01 08:01:16 EST
An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited.

Variant CVE-2017-5754 relies on the fact that, on impacted microprocessors, during speculative execution of instruction permission faults, exception generation triggered by a faulting access is suppressed until the retirement of the whole instruction block. In a combination with the fact that memory accesses may populate the cache even when the block is being dropped and never committed (executed), an unprivileged local attacker could use this flaw to read privileged (kernel space) memory by conducting targeted cache side-channel attacks.

Note: CVE-2017-5754 affects Intel x86-64 microprocessors. AMD x86-64 microprocessors are not affected by this issue.
Comment 4 Petr Matousek 2018-01-03 14:35:33 EST
Acknowledgments:

Name: Google Project Zero
Comment 5 Petr Matousek 2018-01-03 14:36:39 EST
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/speculativeexecution
Comment 7 Petr Matousek 2018-01-03 17:54:43 EST
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1530826]
Comment 9 errata-xmlrpc 2018-01-03 18:18:45 EST
This issue has been addressed in the following products:

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

Via RHSA-2018:0010 https://access.redhat.com/errata/RHSA-2018:0010
Comment 10 errata-xmlrpc 2018-01-03 19:05:41 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.3 Extended Update Support

Via RHSA-2018:0009 https://access.redhat.com/errata/RHSA-2018:0009
Comment 11 errata-xmlrpc 2018-01-03 19:19:53 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.7 Extended Update Support

Via RHSA-2018:0011 https://access.redhat.com/errata/RHSA-2018:0011
Comment 12 errata-xmlrpc 2018-01-03 19:43:32 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:0007 https://access.redhat.com/errata/RHSA-2018:0007
Comment 13 errata-xmlrpc 2018-01-03 19:46:05 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:0008 https://access.redhat.com/errata/RHSA-2018:0008
Comment 14 errata-xmlrpc 2018-01-04 00:51:47 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:0016 https://access.redhat.com/errata/RHSA-2018:0016
Comment 15 errata-xmlrpc 2018-01-04 00:53:52 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.6 Advanced Update Support
  Red Hat Enterprise Linux 6.6 Telco Extended Update Support

Via RHSA-2018:0017 https://access.redhat.com/errata/RHSA-2018:0017
Comment 16 errata-xmlrpc 2018-01-04 08:08:20 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.4 Advanced Update Support

Via RHSA-2018:0018 https://access.redhat.com/errata/RHSA-2018:0018
Comment 17 errata-xmlrpc 2018-01-04 11:55:07 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.2 Advanced Update Support

Via RHSA-2018:0020 https://access.redhat.com/errata/RHSA-2018:0020
Comment 18 errata-xmlrpc 2018-01-04 11:57:47 EST
This issue has been addressed in the following products:

  Red Hat Enterprise MRG 2

Via RHSA-2018:0021 https://access.redhat.com/errata/RHSA-2018:0021
Comment 19 errata-xmlrpc 2018-01-04 12:08:24 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.5 Advanced Update Support

Via RHSA-2018:0022 https://access.redhat.com/errata/RHSA-2018:0022
Comment 20 Justin M. Forbes 2018-01-04 13:11:34 EST
This issue is fixed for Fedora with the kernel-4.14.11 stable updates.
Comment 24 errata-xmlrpc 2018-01-05 10:52:06 EST
This issue has been addressed in the following products:

  RHEV 3.X Hypervisor and Agents for RHEL-6
  RHEV 3.X Hypervisor and Agents for RHEL-7 ELS

Via RHSA-2018:0046 https://access.redhat.com/errata/RHSA-2018:0046
Comment 25 errata-xmlrpc 2018-01-05 10:54:26 EST
This issue has been addressed in the following products:

  RHEV 4.X RHEV-H and Agents for RHEL-7

Via RHSA-2018:0047 https://access.redhat.com/errata/RHSA-2018:0047
Comment 26 errata-xmlrpc 2018-01-05 11:00:00 EST
This issue has been addressed in the following products:

  RHEV 3.X Hypervisor and Agents for RHEL-7

Via RHSA-2018:0044 https://access.redhat.com/errata/RHSA-2018:0044
Comment 27 errata-xmlrpc 2018-01-05 11:08:27 EST
This issue has been addressed in the following products:

  RHEV 4.X RHEV-H and Agents for RHEL-7

Via RHSA-2018:0045 https://access.redhat.com/errata/RHSA-2018:0045
Comment 28 errata-xmlrpc 2018-01-15 16:38:09 EST
This issue has been addressed in the following products:

  CloudForms Management Engine 4.1

Via RHSA-2018:0089 https://access.redhat.com/errata/RHSA-2018:0089
Comment 29 errata-xmlrpc 2018-01-15 16:41:02 EST
This issue has been addressed in the following products:

  CloudForms Management Engine 4.2

Via RHSA-2018:0090 https://access.redhat.com/errata/RHSA-2018:0090
Comment 30 errata-xmlrpc 2018-01-15 16:44:32 EST
This issue has been addressed in the following products:

  CloudForms Management Engine 4.5

Via RHSA-2018:0091 https://access.redhat.com/errata/RHSA-2018:0091
Comment 31 errata-xmlrpc 2018-01-16 16:01:08 EST
This issue has been addressed in the following products:

  CloudForms Management Engine 5.5

Via RHSA-2018:0092 https://access.redhat.com/errata/RHSA-2018:0092
Comment 32 errata-xmlrpc 2018-01-25 06:29:20 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:0151 https://access.redhat.com/errata/RHSA-2018:0151
Comment 33 errata-xmlrpc 2018-01-25 07:01:48 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.3 Extended Update Support

Via RHSA-2018:0182 https://access.redhat.com/errata/RHSA-2018:0182
Comment 34 errata-xmlrpc 2018-02-09 07:58:10 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5 Extended Lifecycle Support

Via RHSA-2018:0292 https://access.redhat.com/errata/RHSA-2018:0292

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