CVE-2018-5390: Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service

Published Jul 17, 2018
·
Updated

A flaw named SegmentSmack was found in the way the Linux kernel handled specially crafted TCP packets. A remote attacker could use this flaw to trigger time and calculation expensive calls to tcpcollapseofoqueue() and tcppruneofoqueue() functions by sending specially modified packets within ongoing TCP sessions which could lead to a CPU saturation and hence a denial of service on the system. Maintaining the denial of service condition requires continuous two-way TCP sessions to a reachable open port, thus the attacks cannot be performed using spoofed IP addresses.

Other sources

Linux kernel versions 4.9+ can be forced to make very expensive calls to tcpcollapseofoqueue() and tcppruneofoqueue() for every incoming packet which can lead to a denial of service.

Affected Software

154 affected componentsFixes available
redhat/kernel<0:2.6.32-754.3.5.el6
0:2.6.32-754.3.5.el6
redhat/kernel<0:2.6.32-358.93.1.el6
0:2.6.32-358.93.1.el6
redhat/kernel<0:2.6.32-431.93.2.el6
0:2.6.32-431.93.2.el6
redhat/kernel<0:2.6.32-504.76.2.el6
0:2.6.32-504.76.2.el6
redhat/kernel<0:2.6.32-573.62.1.el6
0:2.6.32-573.62.1.el6
redhat/kernel-rt<0:3.10.0-862.11.6.rt56.819.el7
0:3.10.0-862.11.6.rt56.819.el7
redhat/kernel<0:3.10.0-862.11.6.el7
0:3.10.0-862.11.6.el7
redhat/kernel-alt<0:4.14.0-115.el7a
0:4.14.0-115.el7a
redhat/kernel<0:3.10.0-327.73.1.el7
0:3.10.0-327.73.1.el7
redhat/kernel<0:3.10.0-514.58.1.el7
0:3.10.0-514.58.1.el7
redhat/kernel<0:3.10.0-693.39.1.el7
0:3.10.0-693.39.1.el7
redhat/kernel-rt<1:3.10.0-693.39.1.rt56.629.el6
1:3.10.0-693.39.1.rt56.629.el6
redhat/redhat-release-virtualization-host<0:4.2-5.2.el7
0:4.2-5.2.el7
redhat Virtualization=4.0
redhat Enterprise Linux Desktop=7.0
redhat Enterprise Linux Server=7.0
redhat Enterprise Linux Server Aus=6.4
redhat Enterprise Linux Server Aus=6.5
redhat Enterprise Linux Server Aus=6.6
redhat Enterprise Linux Server Aus=7.2
redhat Enterprise Linux Server Aus=7.3
redhat Enterprise Linux Server Aus=7.4
redhat Enterprise Linux Server Eus=6.4
redhat Enterprise Linux Server Eus=6.7
redhat Enterprise Linux Server Eus=7.2
redhat Enterprise Linux Server Eus=7.3
redhat Enterprise Linux Server Eus=7.4
redhat Enterprise Linux Server Eus=7.5
redhat Enterprise Linux Server Tus=6.6
redhat Enterprise Linux Server Tus=7.2
redhat Enterprise Linux Server Tus=7.3
redhat Enterprise Linux Server Tus=7.4
redhat Enterprise Linux Workstation=7.0
Linux Linux kernel>=4.9<4.18
Linux Linux kernel=4.18-rc1
Linux Linux kernel=4.18-rc2
Linux Linux kernel=4.18-rc3
Linux Linux kernel=4.18-rc4
Linux Linux kernel=4.18-rc5
Linux Linux kernel=4.18-rc6
Canonical Ubuntu Linux=12.04
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Debian Debian Linux=8.0
Debian Debian Linux=9.0
HP Aruba Airwave Amp<8.2.7.1
HP Aruba ClearPass Policy Manager>=6.6.0<=6.6.9
HP Aruba ClearPass Policy Manager>=6.7.0<=6.7.5
F5 BIG-IP Access Policy Manager>=11.5.1<=11.6.3
F5 BIG-IP Access Policy Manager>=12.1.0<=12.1.3
F5 BIG-IP Access Policy Manager>=13.0.0<=13.1.1
F5 BIG-IP Access Policy Manager=14.0.0
F5 BIG-IP Advanced Firewall Manager>=11.5.1<=11.6.3
F5 BIG-IP Advanced Firewall Manager>=12.1.0<=12.1.3
F5 BIG-IP Advanced Firewall Manager>=13.0.0<=13.1.1
F5 BIG-IP Advanced Firewall Manager=14.0.0
F5 BIG-IP Analytics>=11.5.1<=11.6.3
F5 BIG-IP Analytics>=12.1.0<=12.1.3
F5 BIG-IP Analytics>=13.0.0<=13.1.1
F5 BIG-IP Analytics=14.0.0
F5 Big-ip Application Acceleration Manager>=11.5.1<=11.6.3
F5 Big-ip Application Acceleration Manager>=12.1.0<=12.1.3
F5 Big-ip Application Acceleration Manager>=13.0.0<=13.1.1
F5 Big-ip Application Acceleration Manager=14.0.0
F5 BIG-IP Application Security Manager>=11.5.1<=11.6.3
F5 BIG-IP Application Security Manager>=12.1.0<=12.1.3
F5 BIG-IP Application Security Manager>=13.0.0<=13.1.1
F5 BIG-IP Application Security Manager=14.0.0
F5 Big-ip Domain Name System>=11.5.1<=11.6.3
F5 Big-ip Domain Name System>=12.1.0<=12.1.3
F5 Big-ip Domain Name System>=13.0.0<=13.1.1
F5 Big-ip Domain Name System=14.0.0
F5 BIG-IP Edge Gateway>=11.5.1.<=11.6.3
F5 BIG-IP Edge Gateway>=12.1.0<=12.1.3
F5 BIG-IP Edge Gateway>=13.0.0<=13.1.1
F5 BIG-IP Edge Gateway=14.0.0
F5 Big-ip Fraud Protection Service>=11.5.1<=11.6.3
F5 Big-ip Fraud Protection Service>=12.1.0<=12.1.3
F5 Big-ip Fraud Protection Service>=13.0.0<=13.1.1
F5 Big-ip Fraud Protection Service=14.0.0
F5 Big-ip Global Traffic Manager>=11.5.1<=11.6.3
F5 Big-ip Global Traffic Manager>=12.1.0<=12.1.3
F5 Big-ip Global Traffic Manager>=13.0.0<=13.1.1
F5 Big-ip Global Traffic Manager=14.0.0
F5 Big-ip Link Controller>=11.5.1<=11.6.3
F5 Big-ip Link Controller>=12.1.0<=12.1.3
F5 Big-ip Link Controller>=13.0.0<=13.1.1
F5 Big-ip Link Controller=14.0.0
F5 Big-ip Local Traffic Manager>=11.5.1<=11.6.3
F5 Big-ip Local Traffic Manager>=12.0.0<=12.1.3
F5 Big-ip Local Traffic Manager>13.0.0<=13.1.1
F5 Big-ip Local Traffic Manager=14.0.0
F5 Big-ip Policy Enforcement Manager>=11.5.1<=11.6.3
F5 Big-ip Policy Enforcement Manager>=12.1.0<=12.1.3
F5 Big-ip Policy Enforcement Manager>=13.0.0<=13.1.1
F5 Big-ip Policy Enforcement Manager=14.0.0
F5 Big-ip Webaccelerator>=11.5.1<=11.6.3
F5 Big-ip Webaccelerator>=12.1.0<=12.1.3
F5 Big-ip Webaccelerator>=13.0.0<=13.1.1
F5 Big-ip Webaccelerator=14.0.0
F5 Traffix Systems Signaling Delivery Controller>=5.0.0<=5.1.0
F5 Traffix Systems Signaling Delivery Controller=4.4.0
A10networks Advanced Core Operating System=3.2.2
A10networks Advanced Core Operating System=3.2.2-p5
A10networks Advanced Core Operating System=4.1.0
A10networks Advanced Core Operating System=4.1.0-p11
A10networks Advanced Core Operating System=4.1.1-p8
A10networks Advanced Core Operating System=4.1.2
A10networks Advanced Core Operating System=4.1.2-p4
A10networks Advanced Core Operating System=4.1.4
A10networks Advanced Core Operating System=4.1.4-p1
Cisco Collaboration Meeting Rooms=1.0
Cisco Digital Network Architecture Center=1.2
Cisco Expressway=x8.10
Cisco Expressway=x8.10.1
Cisco Expressway=x8.10.2
Cisco Expressway=x8.10.3
Cisco Expressway=x8.10.4
Cisco Expressway=x8.11
Cisco Expressway Series
Cisco Meeting Management=1.0
Cisco Meeting Management=1.0.1
Cisco Network Assurance Engine=2.1\(1a\)
Cisco Threat Grid-cloud
Cisco Webex Hybrid Data Security
Cisco Webex Video Mesh
Cisco Telepresence Video Communication Server Firmware=x8.10
Cisco Telepresence Video Communication Server Firmware=x8.10.1
Cisco Telepresence Video Communication Server Firmware=x8.10.2
Cisco Telepresence Video Communication Server Firmware=x8.10.3
Cisco Telepresence Video Communication Server Firmware=x8.10.4
Cisco Telepresence Video Communication Server Firmware=x8.11
Cisco TelePresence Video Communication Server
Cisco Telepresence Conductor Firmware=xc4.3
Cisco Telepresence Conductor Firmware=xc4.3.1
Cisco Telepresence Conductor Firmware=xc4.3.2
Cisco Telepresence Conductor Firmware=xc4.3.3
Cisco Telepresence Conductor Firmware=xc4.3.4
Cisco TelePresence Conductor
All of the following
Any of the following
Cisco Telepresence Video Communication Server Firmware=x8.10
Cisco Telepresence Video Communication Server Firmware=x8.10.1
Cisco Telepresence Video Communication Server Firmware=x8.10.2
Cisco Telepresence Video Communication Server Firmware=x8.10.3
Cisco Telepresence Video Communication Server Firmware=x8.10.4
Cisco Telepresence Video Communication Server Firmware=x8.11
Cisco TelePresence Video Communication Server
All of the following
Any of the following
Cisco Telepresence Conductor Firmware=xc4.3
Cisco Telepresence Conductor Firmware=xc4.3.1
Cisco Telepresence Conductor Firmware=xc4.3.2
Cisco Telepresence Conductor Firmware=xc4.3.3
Cisco Telepresence Conductor Firmware=xc4.3.4
Cisco TelePresence Conductor
debian/linux
5.10.223-15.10.262-16.1.176-16.1.180-16.12.94-16.12.101-17.1.7-17.1.8-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:2.6.32-754.3.5.el6
  2. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:2.6.32-358.93.1.el6
  3. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:2.6.32-431.93.2.el6
  4. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:2.6.32-504.76.2.el6
  5. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:2.6.32-573.62.1.el6
  6. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 0:3.10.0-862.11.6.rt56.819.el7
  7. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:3.10.0-862.11.6.el7
  8. Upgrade

    Upgrade redhat/kernel-alt to a version that resolves this vulnerability.

    Fixed in 0:4.14.0-115.el7a
  9. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:3.10.0-327.73.1.el7
  10. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:3.10.0-514.58.1.el7
  11. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:3.10.0-693.39.1.el7
  12. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 1:3.10.0-693.39.1.rt56.629.el6
  13. Upgrade

    Upgrade redhat/redhat-release-virtualization-host to a version that resolves this vulnerability.

    Fixed in 0:4.2-5.2.el7
  14. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 5.10.223-1Fixed in 5.10.262-1Fixed in 6.1.176-1Fixed in 6.1.180-1Fixed in 6.12.94-1Fixed in 6.12.101-1Fixed in 7.1.7-1Fixed in 7.1.8-1
  15. Upgrade

    Upgrade Linux kernel to a version that resolves this vulnerability.

    Patch 3d4bf93ac12003f9b8e1e2de37fe27983deebdcf
  16. Upgrade

    Upgrade Linux kernel to a version that resolves this vulnerability.

    Patch 58152ecbbcc6a0ce7fddd5bf5f6ee535834ece0c
  17. Upgrade

    Upgrade Linux kernel to a version that resolves this vulnerability.

    Patch 72cd43ba64fc172a443410ce01645895850844c8
  18. Upgrade

    Upgrade Linux kernel to a version that resolves this vulnerability.

    Patch 8541b21e781a22dce52a74fef0b9bed00404a1cd
  19. Upgrade

    Upgrade Linux kernel to a version that resolves this vulnerability.

    Patch f4a3313d8e2ca9fd8d8f45e40a2903ba782607e7

Event History

Jul 17, 2018
Data Sourced
via Red Hat·05:06 AM
DescriptionSeverityAffected Software
Aug 6, 2018
CVE Published
12:00 AM
CVE Published
via MITRE·08:00 PM
Data Sourced
via MITRE·08:00 PM
DescriptionWeakness
Data Sourced
via NVD·08:29 PM
RemedyDescriptionSeverityWeaknessAffected Software
Sep 23, 2025
Data Sourced
via Launchpad·04:35 AM
Description
Jul 4, 2026
Data Sourced
via Ubuntu·11:04 AM
RemedyDescriptionSeverityAffected Software
Aug 12, 2026
Data Sourced
via Debian·11:52 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2018-5390?

CVE-2018-5390 has been classified with a CVSS score indicating a high severity, as it allows attackers to potentially impact system performance.

2

How do I fix CVE-2018-5390?

To fix CVE-2018-5390, apply the appropriate kernel updates provided by your Linux distribution, specifically versions listed in the vulnerability advisory.

3

Which systems are affected by CVE-2018-5390?

CVE-2018-5390 affects specific versions of the Linux kernel, including Red Hat and Debian distributions as well as various Linux-based systems.

4

What are the potential impacts of exploiting CVE-2018-5390?

Exploiting CVE-2018-5390 could lead to denial-of-service conditions on affected systems due to excessive resource consumption.

5

Is there a known exploit for CVE-2018-5390?

Yes, CVE-2018-5390 has known exploit methods that enable attackers to craft malicious TCP packets to exploit the vulnerability.

Company

Resources

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