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Alerts This Week
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Red Hat Enterprise Linux 7 RHSA-2017-3315-01 Important: Memory Disclosure

red hat
Calendar Grey November 30, 2017
Scroller Redhat
A crucial system patch tackles vulnerabilities in CentOS 7, highlighting threats associated with data leakage.
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.
These updated kernel packages include several security issues and numerous bug fixes, some of which you can see below. Space precludes documenting all of these bug fixes in this advisory. To see the complete list of bug fixes, users are directed to the related Knowledge Article: https://access.redhat.com/articles/3253081
Security Fix(es):
* It was found that the timer functionality in the Linux kernel ALSA subsystem is prone to a race condition between read and ioctl system call handlers, resulting in an uninitialized memory disclosure to user space. A local user could use this flaw to read information belonging to other users. (CVE-2017-1000380, Moderate)
Red Hat would like to thank Alexander Potapenko (Google) for reporting this issue.

Topics%20covered

Topics Covered

security advisory kernel update Red Hat Enterprise Linux critical threat memory disclosure

References

https://access.redhat.com/security/cve/CVE-2017-1000380 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/articles/3253081

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: kernel-3.10.0-693.11.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-693.11.1.el7.noarch.rpm kernel-doc-3.10.0-693.11.1.el7.noarch.rpm
x86_64: kernel-3.10.0-693.11.1.el7.x86_64.rpm kernel-debug-3.10.0-693.11.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.11.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.11.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.11.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.11.1.el7.x86_64.rpm kernel-devel-3.10.0-693.11.1.el7.x86_64.rpm kernel-headers-3.10.0-693.11.1.el7.x86_64.rpm kernel-tools-3.10.0-693.11.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.11.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.11.1.el7.x86_64.rpm perf-3.10.0-693.11.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.11.1.el7.x86_64.rpm python-perf-3.10.0-693.11.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.11.1.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: kernel-debug-debuginfo-3.10.0-693.11.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.11.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.11.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.11.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.11.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.11.1.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2017:3315-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:3315
Issue date: 2017-11-30

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 Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory kernel update Red Hat Enterprise Linux critical threat memory disclosure

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

Bugs Fixed

1463311 - CVE-2017-1000380 kernel: information leak due to a data race in ALSA timer

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