Audit Linux privileges now to limit compromise, escalation, and system-wide damage. Review Linux Privileges×

Alerts This Week
Warning Icon 1 506
Alerts This Week
Warning Icon 1 506

Red Hat Enterprise Linux 6 RHSA-2018:1319-01 Important: Kernel DoS Exposure

red hat
Calendar Grey May 8, 2018
Scroller Redhat
A patch release for Red Hat Enterprise Linux 6 kernel resolves critical vulnerabilities and various bugs. System reboot is necessary.
An update for kernel is now available for Red Hat Enterprise Linux 6

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):
* hw: cpu: speculative execution permission faults handling (CVE-2017-5754)
* Kernel: error in exception handling leads to DoS (CVE-2018-8897)
* kernel: nfsd: Incorrect handling of long RPC replies (CVE-2017-7645)
* kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824)
* kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166)
* kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c (CVE-2017-18017)
* kernel: Stack information leak in the EFS element (CVE-2017-1000410)
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 Google Project Zero for reporting CVE-2017-5754; Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting CVE-2018-8897; Mohamed Ghannam for reporting CVE-2017-8824; and Armis Labs for reporting CVE-2017-1000410.
Bug Fix(es):
These updated kernel packages include also numerous bug fixes. Space precludes documenting all of these bug fixes in this advisory. See the bug fix descriptions in the related Knowledge Article: https://access.redhat.com/articles/3431591

Topics%20covered

Topics Covered

security advisory bug fix DoS kernel patch Red Hat Enterprise Linux security impact important update

References

https://access.redhat.com/security/cve/CVE-2017-7645 https://access.redhat.com/security/cve/CVE-2017-8824 https://access.redhat.com/security/cve/CVE-2017-13166 https://access.redhat.com/security/cve/CVE-2017-18017 https://access.redhat.com/security/cve/CVE-2017-1000410 https://access.redhat.com/security/cve/CVE-2018-8897 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/articles/3431591

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: kernel-2.6.32-696.28.1.el6.src.rpm
i386: kernel-2.6.32-696.28.1.el6.i686.rpm kernel-debug-2.6.32-696.28.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.28.1.el6.i686.rpm kernel-debug-devel-2.6.32-696.28.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.28.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.28.1.el6.i686.rpm kernel-devel-2.6.32-696.28.1.el6.i686.rpm kernel-headers-2.6.32-696.28.1.el6.i686.rpm perf-2.6.32-696.28.1.el6.i686.rpm perf-debuginfo-2.6.32-696.28.1.el6.i686.rpm python-perf-debuginfo-2.6.32-696.28.1.el6.i686.rpm
noarch: kernel-abi-whitelists-2.6.32-696.28.1.el6.noarch.rpm kernel-doc-2.6.32-696.28.1.el6.noarch.rpm kernel-firmware-2.6.32-696.28.1.el6.noarch.rpm
x86_64: kernel-2.6.32-696.28.1.el6.x86_64.rpm kernel-debug-2.6.32-696.28.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-696.28.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.28.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-696.28.1.el6.i686.rpm kernel-debug-devel-2.6.32-696.28.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.28.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.28.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-696.28.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-696.28.1.el6.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2018:1319-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:1319
Issue date: 2018-05-08

Topic

An update for kernel is now available for Red Hat Enterprise Linux 6.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 bug fix DoS kernel patch Red Hat Enterprise Linux security impact important update

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Bugs Fixed

1443615 - CVE-2017-7645 kernel: nfsd: Incorrect handling of long RPC replies

1519160 - CVE-2017-1000410 kernel: Stack information leak in the EFS element

1519591 - CVE-2017-8824 kernel: Use-after-free vulnerability in DCCP socket

1519781 - CVE-2017-5754 hw: cpu: speculative execution permission faults handling

1531135 - CVE-2017-18017 kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c

1548412 - CVE-2017-13166 kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation

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

Get the latest News and Insights

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