Skip to navigation Skip to main content

Utilities

  • Subscriptions
  • Downloads
  • Containers
  • Support Cases
Red Hat Customer Portal
  • Subscriptions
  • Downloads
  • Containers
  • Support Cases
  • Products & Services

    Products

    Support

    • Production Support
    • Development Support
    • Product Life Cycles

    Services

    • Consulting
    • Technical Account Management
    • Training & Certifications

    Documentation

    • Red Hat Enterprise Linux
    • Red Hat JBoss Enterprise Application Platform
    • Red Hat OpenStack Platform
    • Red Hat OpenShift Container Platform
    All Documentation

    Ecosystem Catalog

    • Red Hat Partner Ecosystem
    • Partner Resources
  • Tools

    Tools

    • Troubleshoot a product issue
    • Packages
    • Errata

    Customer Portal Labs

    • Configuration
    • Deployment
    • Security
    • Troubleshoot
    All labs

    Red Hat Insights

    Increase visibility into IT operations to detect and resolve technical issues before they impact your business.

    Learn More
    Go to Insights
  • Security

    Red Hat Product Security Center

    Engage with our Red Hat Product Security team, access security updates, and ensure your environments are not exposed to any known security vulnerabilities.

    Product Security Center

    Security Updates

    • Security Advisories
    • Red Hat CVE Database
    • Security Labs

    Keep your systems secure with Red Hat's specialized responses to security vulnerabilities.

    View Responses

    Resources

    • Security Blog
    • Security Measurement
    • Severity Ratings
    • Backporting Policies
    • Product Signing (GPG) Keys
  • Community

    Customer Portal Community

    • Discussions
    • Private Groups
    Community Activity

    Customer Events

    • Red Hat Convergence
    • Red Hat Summit

    Stories

    • Red Hat Subscription Value
    • You Asked. We Acted.
    • Open Source Communities
Or troubleshoot an issue.

Select Your Language

  • English
  • 한국어
  • 日本語
  • 中文 (中国)

Infrastructure and Management

  • Red Hat Enterprise Linux
  • Red Hat Virtualization
  • Red Hat Identity Management
  • Red Hat Directory Server
  • Red Hat Certificate System
  • Red Hat Satellite
  • Red Hat Subscription Management
  • Red Hat Update Infrastructure
  • Red Hat Insights
  • Red Hat Ansible Automation Platform

Cloud Computing

  • Red Hat OpenShift
  • Red Hat CloudForms
  • Red Hat OpenStack Platform
  • Red Hat OpenShift Container Platform
  • Red Hat OpenShift Data Science
  • Red Hat OpenShift Online
  • Red Hat OpenShift Dedicated
  • Red Hat Advanced Cluster Security for Kubernetes
  • Red Hat Advanced Cluster Management for Kubernetes
  • Red Hat Quay
  • OpenShift Dev Spaces
  • Red Hat OpenShift Service on AWS

Storage

  • Red Hat Gluster Storage
  • Red Hat Hyperconverged Infrastructure
  • Red Hat Ceph Storage
  • Red Hat OpenShift Data Foundation

Runtimes

  • Red Hat Runtimes
  • Red Hat JBoss Enterprise Application Platform
  • Red Hat Data Grid
  • Red Hat JBoss Web Server
  • Red Hat Single Sign On
  • Red Hat support for Spring Boot
  • Red Hat build of Node.js
  • Red Hat build of Thorntail
  • Red Hat build of Eclipse Vert.x
  • Red Hat build of OpenJDK
  • Red Hat build of Quarkus

Integration and Automation

  • Red Hat Integration
  • Red Hat Fuse
  • Red Hat AMQ
  • Red Hat 3scale API Management
  • Red Hat JBoss Data Virtualization
  • Red Hat Process Automation
  • Red Hat Process Automation Manager
  • Red Hat Decision Manager
All Products
Red Hat Product Errata RHSA-2016:2107 - Security Advisory
Issued:
2016-10-26
Updated:
2016-10-26

RHSA-2016:2107 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: kernel-rt security update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for kernel-rt is now available for Red Hat Enterprise MRG 2.5.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

  • A race condition was found in the way the Linux kernel's memory subsystem handled the copy-on-write (COW) breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system. (CVE-2016-5195, Important)
  • Linux kernel built with the 802.1Q/802.1ad VLAN(CONFIG_VLAN_8021Q) OR Virtual eXtensible Local Area Network(CONFIG_VXLAN) with Transparent Ethernet Bridging(TEB) GRO support, is vulnerable to a stack overflow issue. It could occur while receiving large packets via GRO path; As an unlimited recursion could unfold in both VLAN and TEB modules, leading to a stack corruption in the kernel. (CVE-2016-7039, Important)

Red Hat would like to thank Phil Oester for reporting CVE-2016-5195.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

  • MRG Realtime 2 x86_64

Fixes

  • BZ - 1375944 - CVE-2016-7039 kernel: remotely triggerable unbounded recursion in the vlan gro code leading to a kernel crash
  • BZ - 1384344 - CVE-2016-5195 kernel: mm: privilege escalation via MAP_PRIVATE COW breakage

CVEs

  • CVE-2016-5195
  • CVE-2016-7039
  • CVE-2016-8666

References

  • https://access.redhat.com/security/updates/classification/#important
Note: More recent versions of these packages may be available. Click a package name for more details.

MRG Realtime 2

SRPM
kernel-rt-3.10.0-327.rt56.198.el6rt.src.rpm SHA-256: c9ce735976335e1d3e6e8b6f408af1826e2956034e498985660ed5eb07675f11
x86_64
kernel-rt-3.10.0-327.rt56.198.el6rt.x86_64.rpm SHA-256: db65f32e5cb6a1ca6e1bd991d79d965ccbd5d5a9e5de25f3902772d628482f29
kernel-rt-debug-3.10.0-327.rt56.198.el6rt.x86_64.rpm SHA-256: 9cf58db42891717dd360ce2e4451e45da6fe33296d91303f3dfdb0e01733785d
kernel-rt-debug-debuginfo-3.10.0-327.rt56.198.el6rt.x86_64.rpm SHA-256: bb2c73075eaeb6bf5d78b15c78fcc214e3938f9ea387724be69d16135ac44359
kernel-rt-debug-devel-3.10.0-327.rt56.198.el6rt.x86_64.rpm SHA-256: 02fe5aaca5357a99f8bdf6afeab46bcef82b1f89f3bb1b41a7b1ed05354c790a
kernel-rt-debuginfo-3.10.0-327.rt56.198.el6rt.x86_64.rpm SHA-256: ce01aa3ecfdf81a537f90ceefed357afd78abbc34c57884c3fc69ca3dec03af9
kernel-rt-debuginfo-common-x86_64-3.10.0-327.rt56.198.el6rt.x86_64.rpm SHA-256: d403dd9467fb948c9fcf4d61e8cd0433692ff2d0302c8211623c470917b402da
kernel-rt-devel-3.10.0-327.rt56.198.el6rt.x86_64.rpm SHA-256: 1c85b6788f97d7accbdcb4780dd599efe436e97295902068f3eee304507b97e4
kernel-rt-doc-3.10.0-327.rt56.198.el6rt.noarch.rpm SHA-256: 5dd0a04dd925b3e5c9e8a44dfc04080a68a17b4110eb7b6a1495ea078884b28e
kernel-rt-firmware-3.10.0-327.rt56.198.el6rt.noarch.rpm SHA-256: e0d895bcce475aaeb51f1017258bc953c0a178c3e0ecd133edb4cd3b813bca97
kernel-rt-trace-3.10.0-327.rt56.198.el6rt.x86_64.rpm SHA-256: 511605a36d2e35a9267ed465484ab3dbd196963c74e7e68f76e94657d548f340
kernel-rt-trace-debuginfo-3.10.0-327.rt56.198.el6rt.x86_64.rpm SHA-256: 17570e80969d23bed754bb27f569c921c98923314ee7d6d4ec092aac5eaa02fc
kernel-rt-trace-devel-3.10.0-327.rt56.198.el6rt.x86_64.rpm SHA-256: 0eaa41d23fa143ffc322a7c08b3c77751c1ff034deeb46d805d5f0fef4346c37
kernel-rt-vanilla-3.10.0-327.rt56.198.el6rt.x86_64.rpm SHA-256: 3b7fda2b672ec773b55ede0f37ecb7d8ec8e952410f900ddb1745ac6bc9b9d36
kernel-rt-vanilla-debuginfo-3.10.0-327.rt56.198.el6rt.x86_64.rpm SHA-256: 51eac7c8deb3f776060e570ccd2d020164a3027fa235478cc8d5017c5ea91e09
kernel-rt-vanilla-devel-3.10.0-327.rt56.198.el6rt.x86_64.rpm SHA-256: a4e23095352d4e126b5e683854877be2406732862732f9ba6fdcf63d6714acf4

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

Red Hat

Quick Links

  • Downloads
  • Subscriptions
  • Support Cases
  • Customer Service
  • Product Documentation

Help

  • Contact Us
  • Customer Portal FAQ
  • Log-in Assistance

Site Info

  • Trust Red Hat
  • Browser Support Policy
  • Accessibility
  • Awards and Recognition
  • Colophon

Related Sites

  • redhat.com
  • developers.redhat.com
  • connect.redhat.com
  • cloud.redhat.com

About

  • Red Hat Subscription Value
  • About Red Hat
  • Red Hat Jobs
Copyright © 2023 Red Hat, Inc.
  • Privacy Statement
  • Customer Portal Terms of Use
  • All Policies and Guidelines
Red Hat Summit
Twitter