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Red Hat 7 RHSA-2018:1852-01 Moderate: Kernel FPU Leak Fix

red hat
Calendar Grey June 14, 2018
Scroller Redhat
Red Hat has issued a significant security patch for the kernel, resolving an FPU state information exposure vulnerability in RHEL 7.
An update for kernel is now available for Red Hat Enterprise Linux 7

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.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* Kernel: FPU state information leakage via lazy FPU restore (CVE-2018-3665)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Red Hat would like to thank Julian Stecklina (Amazon.de), Thomas Prescher (cyberus-technology.de), and Zdenek Sojka (sysgo.com) for reporting this issue.

Topics%20covered

Topics Covered

security advisory moderate software update security fix Red Hat Enterprise Linux kernel FPU leak

References

https://access.redhat.com/security/cve/CVE-2018-3665 https://access.redhat.com/security/updates/classification#moderate https://access.redhat.com/solutions/3485131

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: kernel-3.10.0-862.3.3.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-862.3.3.el7.noarch.rpm kernel-doc-3.10.0-862.3.3.el7.noarch.rpm
x86_64: kernel-3.10.0-862.3.3.el7.x86_64.rpm kernel-debug-3.10.0-862.3.3.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-862.3.3.el7.x86_64.rpm kernel-debug-devel-3.10.0-862.3.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-862.3.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-862.3.3.el7.x86_64.rpm kernel-devel-3.10.0-862.3.3.el7.x86_64.rpm kernel-headers-3.10.0-862.3.3.el7.x86_64.rpm kernel-tools-3.10.0-862.3.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-862.3.3.el7.x86_64.rpm kernel-tools-libs-3.10.0-862.3.3.el7.x86_64.rpm perf-3.10.0-862.3.3.el7.x86_64.rpm perf-debuginfo-3.10.0-862.3.3.el7.x86_64.rpm python-perf-3.10.0-862.3.3.el7.x86_64.rpm python-perf-debuginfo-3.10.0-862.3.3.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: kernel-debug-debuginfo-3.10.0-862.3.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-862.3.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-862.3.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-862.3.3.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-862.3.3.el7.x86_64.rpm perf-debuginfo-3.10.0-862.3.3.el7.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2018:1852-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:1852
Issue date: 2018-06-14

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate software update security fix Red Hat Enterprise Linux kernel FPU leak

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - noarch, ppc64le, s390x

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - noarch, ppc64le

Bugs Fixed

1585011 - CVE-2018-3665 Kernel: FPU state information leakage via lazy FPU restore

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