Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 461
Alerts This Week
Warning Icon 1 461

Red Hat Enterprise MRG: RHSA-2018-1354-01 Critical DoS Fix in Kernel-RT

red hat
Calendar Grey May 8, 2018
Scroller Redhat
A critical security patch for the kernel-rt in Red Hat Enterprise MRG 2 has become necessary to address significant vulnerabilities associated with Denial of Service (DoS) attacks.
An update for kernel-rt is now available for Red Hat Enterprise MRG 2

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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* 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 Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting CVE-2018-8897 and Andy Lutomirski for reporting CVE-2018-1000199.

Topics%20covered

Topics Covered

security advisory update critical DoS security fix kernel-rt Red Hat Enterprise MRG

References

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 https://access.redhat.com/security/vulnerabilities/pop_ss

Package List

Red Hat MRG Realtime for RHEL 6 Server v.2:
Source: kernel-rt-3.10.0-693.25.4.rt56.613.el6rt.src.rpm
noarch: kernel-rt-doc-3.10.0-693.25.4.rt56.613.el6rt.noarch.rpm kernel-rt-firmware-3.10.0-693.25.4.rt56.613.el6rt.noarch.rpm
x86_64: kernel-rt-3.10.0-693.25.4.rt56.613.el6rt.x86_64.rpm kernel-rt-debug-3.10.0-693.25.4.rt56.613.el6rt.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-693.25.4.rt56.613.el6rt.x86_64.rpm kernel-rt-debug-devel-3.10.0-693.25.4.rt56.613.el6rt.x86_64.rpm kernel-rt-debuginfo-3.10.0-693.25.4.rt56.613.el6rt.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-693.25.4.rt56.613.el6rt.x86_64.rpm kernel-rt-devel-3.10.0-693.25.4.rt56.613.el6rt.x86_64.rpm kernel-rt-trace-3.10.0-693.25.4.rt56.613.el6rt.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-693.25.4.rt56.613.el6rt.x86_64.rpm kernel-rt-trace-devel-3.10.0-693.25.4.rt56.613.el6rt.x86_64.rpm kernel-rt-vanilla-3.10.0-693.25.4.rt56.613.el6rt.x86_64.rpm kernel-rt-vanilla-debuginfo-3.10.0-693.25.4.rt56.613.el6rt.x86_64.rpm kernel-rt-vanilla-devel-3.10.0-693.25.4.rt56.613.el6rt.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2018:1354-01
Product: Red Hat Enterprise MRG for RHEL-6
Advisory URL: https://access.redhat.com/errata/RHSA-2018:1354
Issue date: 2018-05-08

Topic

An update for kernel-rt is now available for Red Hat Enterprise MRG 2.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 update critical DoS security fix kernel-rt Red Hat Enterprise MRG

Relevant Releases Architectures

Red Hat MRG Realtime for RHEL 6 Server v.2 - noarch, x86_64

Bugs Fixed

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

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.