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Alerts This Week
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Red Hat Enterprise Linux 7.3 RHSA-2018:1348-01 Important DoS Threat

red hat
Calendar Grey May 8, 2018
Scroller Redhat
Crucial kernel security patch released for Red Hat Enterprise Linux 7.3 addressing severe DoS vulnerabilities.
An update for kernel is now available for Red Hat Enterprise Linux 7.3 Extended Update Support

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: KVM: error in exception handling leads to wrong debug stack value (CVE-2018-1087)
* Kernel: error in exception handling leads to DoS (CVE-2018-8897)
* kernel: ptrace() incorrect error handling leads to corruption and DoS (CVE-2018-1000199)
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 Andy Lutomirski for reporting CVE-2018-1087 and CVE-2018-1000199 and Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting CVE-2018-8897.

Topics%20covered

Topics Covered

security advisory Red Hat kernel update critical DoS security impact

References

https://access.redhat.com/security/cve/CVE-2018-1087 https://access.redhat.com/security/cve/CVE-2018-8897 https://access.redhat.com/security/cve/CVE-2018-1000199 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.3):
Source: kernel-3.10.0-514.48.3.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-514.48.3.el7.noarch.rpm kernel-doc-3.10.0-514.48.3.el7.noarch.rpm
x86_64: kernel-3.10.0-514.48.3.el7.x86_64.rpm kernel-debug-3.10.0-514.48.3.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-514.48.3.el7.x86_64.rpm kernel-debug-devel-3.10.0-514.48.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.48.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.48.3.el7.x86_64.rpm kernel-devel-3.10.0-514.48.3.el7.x86_64.rpm kernel-headers-3.10.0-514.48.3.el7.x86_64.rpm kernel-tools-3.10.0-514.48.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.48.3.el7.x86_64.rpm kernel-tools-libs-3.10.0-514.48.3.el7.x86_64.rpm perf-3.10.0-514.48.3.el7.x86_64.rpm perf-debuginfo-3.10.0-514.48.3.el7.x86_64.rpm python-perf-3.10.0-514.48.3.el7.x86_64.rpm python-perf-debuginfo-3.10.0-514.48.3.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3):
x86_64: kernel-debug-debuginfo-3.10.0-514.48.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-514.48.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-514.48.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-514.48.3.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-514.48.3.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2018:1348-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:1348
Issue date: 2018-05-08

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.3Extended Update Support.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 Red Hat kernel update critical DoS security impact

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.3) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3) - x86_64

Red Hat Enterprise Linux Server EUS (v. 7.3) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 7.3) - ppc64, ppc64le, x86_64

Bugs Fixed

1566837 - CVE-2018-1087 Kernel: KVM: error in exception handling leads to wrong debug stack value

1567074 - CVE-2018-8897 Kernel: error in exception handling leads to DoS

1568477 - CVE-2018-1000199 kernel: ptrace() incorrect error handling leads to corruption and DoS

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