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Fencer Vulns
high 7.5

CVE-2018-5390 in the critical feed json

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 2018-08-06 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-17160

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
71.8%
EPSS 71.8% chance of exploitation in 30 days, percentile 99.4%
public exploits
0
none known

Summary

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.

Patch / fix

  • hp aruba_airwave_amp 8.2.7.1
  • linux linux_kernel 4.18
  • linux Debian 14, Debian 13, Debian 12 4.17.14-1

debian advisories DEBIAN-CVE-2018-5390

  • linux Ubuntu 14.04 LTS 3.13.0-155.205
  • linux Ubuntu 16.04 LTS 4.4.0-133.159
  • linux Ubuntu 18.04 LTS 4.15.0-30.32
  • linux-aws Ubuntu 14.04 LTS 4.4.0-1027.30
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1065.75
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1017.17
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1015.15~16.04.1
  • linux-gcp Ubuntu 18.04 LTS 4.15.0-1015.15

ubuntu advisories UBUNTU-CVE-2018-5390

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-alt RHEL 7 4.14.0-115.el7a
  • perf RHEL 7 4.14.0-115.el7a
  • kernel RHEL 7 4.14.0-115.el7a
  • python-perf RHEL 7 4.14.0-115.el7a
  • kernel-tools RHEL 7 4.14.0-115.el7a
  • kernel-tools-libs RHEL 7 4.14.0-115.el7a
  • kernel-bootwrapper RHEL 7 4.14.0-115.el7a
  • kernel-abi-whitelists RHEL 7 4.14.0-115.el7a

red hat advisories RHSA-2018:2948RHSA-2018:2390RHSA-2018:2395RHSA-2018:2384RHSA-2018:2933RHSA-2018:2791

  • kernel-ec2 SLE Module for Public Cloud 12 3.12.74-60.64.118.1
  • kernel-syms SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 4.4.121-92.92.1
  • kernel-source SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 4.4.121-92.92.1
  • lttng-modules SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 2.7.1-9.4.1
  • kernel-default SLES 12 SP2-BCL, SLE High Availability Extension 12 SP2, OpenStack Cloud 7 +3 more 4.4.121-92.92.1
  • kgraft-patch-SLE12-SP2_Update_24 SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 1-3.7.1
  • kernel-rt SLE Real Time 12 SP3 4.4.147-3.20.1
  • kernel-syms-rt SLE Real Time 12 SP3 4.4.147-3.20.1

suse advisories SUSE-SU-2019:2821-1SUSE-SU-2019:2601-1SUSE-SU-2019:2230-1SUSE-SU-2019:14127-1SUSE-SU-2019:1870-1SUSE-SU-2019:1767-1

  • linux Arch Linux 4.17.11-1
  • linux-lts Arch Linux 4.14.59-1
  • linux-zen Arch Linux 4.17.11-1
  • linux-hardened Arch Linux 4.17.11.a-1

arch linux advisories AVG-747AVG-748AVG-749AVG-750

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-5390 updated cvss 7.5

kernel: TCP segments with random offsets allow a remote denial of service (SegmentSmack)

  • Red Hat Enterprise Linux 5 kernel
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-862.11.6.el7, kernel 3.10.0-862.11.6.el7, python-perf 3.10.0-862.11.6.el7, kernel-tools 3.10.0-862.11.6.el7, kernel-tools-libs 3.10.0-862.11.6.el7, kernel-abi-whitelists 3.10.0-862.11.6.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-862.11.6.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-862.11.6.el7, kernel 3.10.0-862.11.6.el7, python-perf 3.10.0-862.11.6.el7, kernel-tools 3.10.0-862.11.6.el7, kernel-tools-libs 3.10.0-862.11.6.el7, kernel-abi-whitelists 3.10.0-862.11.6.el7, +1 more
    fixed: vendor fix RHSA-2018:2384
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.3) perf 3.10.0-514.58.1.el7, kernel 3.10.0-514.58.1.el7, python-perf 3.10.0-514.58.1.el7, kernel-tools 3.10.0-514.58.1.el7, kernel-tools-libs 3.10.0-514.58.1.el7, kernel-abi-whitelists 3.10.0-514.58.1.el7, +1 more
    fixed: vendor fix RHSA-2018:2785
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.4) perf 3.10.0-693.39.1.el7, kernel 3.10.0-693.39.1.el7, python-perf 3.10.0-693.39.1.el7, kernel-tools 3.10.0-693.39.1.el7, kernel-tools-libs 3.10.0-693.39.1.el7, kernel-abi-whitelists 3.10.0-693.39.1.el7, +1 more
    fixed: vendor fix RHSA-2018:2776
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-862.11.6.el7
    fixed: vendor fix RHSA-2018:2384
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3) kernel-debuginfo-common-x86_64 3.10.0-514.58.1.el7
    fixed: vendor fix RHSA-2018:2785
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.39.1.el7
    fixed: vendor fix RHSA-2018:2776
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-754.3.5.el6, kernel 2.6.32-754.3.5.el6, kernel-firmware 2.6.32-754.3.5.el6, kernel-abi-whitelists 2.6.32-754.3.5.el6, kernel-debuginfo-common-i686 2.6.32-754.3.5.el6, kernel-debuginfo-common-x86_64 2.6.32-754.3.5.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-754.3.5.el6, kernel-debuginfo-common-i686 2.6.32-754.3.5.el6, kernel-debuginfo-common-x86_64 2.6.32-754.3.5.el6
    fixed: vendor fix RHSA-2018:2390
show 26 more
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) perf 4.14.0-115.el7a, kernel 4.14.0-115.el7a, perf 3.10.0-862.11.6.el7, kernel 3.10.0-862.11.6.el7, kernel-alt 4.14.0-115.el7a, python-perf 4.14.0-115.el7a, +13 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debuginfo-common-ppc64le 4.14.0-115.el7a, kernel-debuginfo-common-ppc64le 3.10.0-862.11.6.el7
    fixed: vendor fix RHSA-2018:2384
  • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-862.11.6.rt56.819.el7, kernel-rt-kvm 3.10.0-862.11.6.rt56.819.el7, kernel-rt-trace 3.10.0-862.11.6.rt56.819.el7, kernel-rt-debug-kvm 3.10.0-862.11.6.rt56.819.el7, kernel-rt-trace-kvm 3.10.0-862.11.6.rt56.819.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-862.11.6.rt56.819.el7
    fixed: vendor fix RHSA-2018:2395
  • Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-754.3.5.el6, kernel 2.6.32-754.3.5.el6, kernel-firmware 2.6.32-754.3.5.el6, kernel-abi-whitelists 2.6.32-754.3.5.el6, kernel-debuginfo-common-i686 2.6.32-754.3.5.el6, kernel-debuginfo-common-x86_64 2.6.32-754.3.5.el6
    fixed: vendor fix RHSA-2018:2390
  • Red Hat Enterprise Linux HPC Node EUS (v. 6.7) perf 2.6.32-573.62.1.el6, kernel 2.6.32-573.62.1.el6, kernel-firmware 2.6.32-573.62.1.el6, kernel-abi-whitelists 2.6.32-573.62.1.el6, kernel-debuginfo-common-i686 2.6.32-573.62.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.62.1.el6
    fixed: vendor fix RHSA-2018:2645
  • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf 2.6.32-754.3.5.el6, kernel-debuginfo-common-x86_64 2.6.32-754.3.5.el6
    fixed: vendor fix RHSA-2018:2390
  • Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) python-perf 2.6.32-573.62.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.62.1.el6
    fixed: vendor fix RHSA-2018:2645
  • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-862.11.6.rt56.819.el7, kernel-rt-trace 3.10.0-862.11.6.rt56.819.el7
    fixed: vendor fix RHSA-2018:2395
  • Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-754.3.5.el6, kernel 2.6.32-754.3.5.el6, kernel-kdump 2.6.32-754.3.5.el6, kernel-firmware 2.6.32-754.3.5.el6, kernel-bootwrapper 2.6.32-754.3.5.el6, kernel-abi-whitelists 2.6.32-754.3.5.el6, +4 more
    fixed: vendor fix RHSA-2018:2390
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-862.11.6.el7, kernel 3.10.0-862.11.6.el7, python-perf 3.10.0-862.11.6.el7, kernel-kdump 3.10.0-862.11.6.el7, kernel-tools 3.10.0-862.11.6.el7, kernel-tools-libs 3.10.0-862.11.6.el7, +6 more
    fixed: vendor fix RHSA-2018:2384
  • Red Hat Enterprise Linux Server AUS (v. 6.4) perf 2.6.32-358.93.1.el6, kernel 2.6.32-358.93.1.el6, kernel-firmware 2.6.32-358.93.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.93.1.el6
    fixed: vendor fix RHSA-2018:2791
  • Red Hat Enterprise Linux Server AUS (v. 6.5) perf 2.6.32-431.93.2.el6, kernel 2.6.32-431.93.2.el6, kernel-firmware 2.6.32-431.93.2.el6, kernel-abi-whitelists 2.6.32-431.93.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.93.2.el6
    fixed: vendor fix RHSA-2018:2933
  • Red Hat Enterprise Linux Server AUS (v. 6.6) perf 2.6.32-504.76.2.el6, kernel 2.6.32-504.76.2.el6, kernel-firmware 2.6.32-504.76.2.el6, kernel-abi-whitelists 2.6.32-504.76.2.el6, kernel-debuginfo-common-x86_64 2.6.32-504.76.2.el6
    fixed: vendor fix RHSA-2018:2924
  • Red Hat Enterprise Linux Server AUS (v. 7.2) perf 3.10.0-327.73.1.el7, kernel 3.10.0-327.73.1.el7, python-perf 3.10.0-327.73.1.el7, kernel-tools 3.10.0-327.73.1.el7, kernel-tools-libs 3.10.0-327.73.1.el7, kernel-abi-whitelists 3.10.0-327.73.1.el7, +1 more Red Hat Enterprise Linux Server E4S (v. 7.2) perf 3.10.0-327.73.1.el7, kernel 3.10.0-327.73.1.el7, python-perf 3.10.0-327.73.1.el7, kernel-tools 3.10.0-327.73.1.el7, kernel-tools-libs 3.10.0-327.73.1.el7, kernel-abi-whitelists 3.10.0-327.73.1.el7, +1 more
    fixed: vendor fix RHSA-2018:2790
  • Red Hat Enterprise Linux Server EUS (v. 6.7) perf 2.6.32-573.62.1.el6, kernel 2.6.32-573.62.1.el6, kernel-kdump 2.6.32-573.62.1.el6, kernel-firmware 2.6.32-573.62.1.el6, kernel-bootwrapper 2.6.32-573.62.1.el6, kernel-abi-whitelists 2.6.32-573.62.1.el6, +4 more
    fixed: vendor fix RHSA-2018:2645
  • Red Hat Enterprise Linux Server EUS (v. 7.3) perf 3.10.0-514.58.1.el7, kernel 3.10.0-514.58.1.el7, python-perf 3.10.0-514.58.1.el7, kernel-kdump 3.10.0-514.58.1.el7, kernel-tools 3.10.0-514.58.1.el7, kernel-tools-libs 3.10.0-514.58.1.el7, +6 more
    fixed: vendor fix RHSA-2018:2785
  • Red Hat Enterprise Linux Server EUS (v. 7.4) perf 3.10.0-693.39.1.el7, kernel 3.10.0-693.39.1.el7, python-perf 3.10.0-693.39.1.el7, kernel-kdump 3.10.0-693.39.1.el7, kernel-tools 3.10.0-693.39.1.el7, kernel-tools-libs 3.10.0-693.39.1.el7, +6 more
    fixed: vendor fix RHSA-2018:2776
  • Red Hat Enterprise Linux Server Optional (v. 6) python-perf 2.6.32-754.3.5.el6, kernel-debuginfo-common-i686 2.6.32-754.3.5.el6, kernel-debuginfo-common-ppc64 2.6.32-754.3.5.el6, kernel-debuginfo-common-s390x 2.6.32-754.3.5.el6, kernel-debuginfo-common-x86_64 2.6.32-754.3.5.el6
    fixed: vendor fix RHSA-2018:2390
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-862.11.6.el7, kernel-debuginfo-common-x86_64 3.10.0-862.11.6.el7, kernel-debuginfo-common-ppc64le 3.10.0-862.11.6.el7
    fixed: vendor fix RHSA-2018:2384
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.4) kernel 2.6.32-358.93.1.el6, python-perf 2.6.32-358.93.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.93.1.el6
    fixed: vendor fix RHSA-2018:2791
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.5) kernel 2.6.32-431.93.2.el6, python-perf 2.6.32-431.93.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.93.2.el6
    fixed: vendor fix RHSA-2018:2933
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.6) python-perf 2.6.32-504.76.2.el6, kernel-debuginfo-common-x86_64 2.6.32-504.76.2.el6
    fixed: vendor fix RHSA-2018:2924
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.2) kernel-debuginfo-common-x86_64 3.10.0-327.73.1.el7 Red Hat Enterprise Linux Server Optional E4S (v. 7.2) kernel-debuginfo-common-x86_64 3.10.0-327.73.1.el7
    fixed: vendor fix RHSA-2018:2790
  • Red Hat Enterprise Linux Server Optional EUS (v. 6.7) python-perf 2.6.32-573.62.1.el6, kernel-debuginfo-common-i686 2.6.32-573.62.1.el6, kernel-debuginfo-common-ppc64 2.6.32-573.62.1.el6, kernel-debuginfo-common-s390x 2.6.32-573.62.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.62.1.el6
    fixed: vendor fix RHSA-2018:2645
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.3) kernel-debuginfo-common-ppc64 3.10.0-514.58.1.el7, kernel-debuginfo-common-x86_64 3.10.0-514.58.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-514.58.1.el7
    fixed: vendor fix RHSA-2018:2785
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.4) kernel-debuginfo-common-ppc64 3.10.0-693.39.1.el7, kernel-debuginfo-common-x86_64 3.10.0-693.39.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.39.1.el7
    fixed: vendor fix RHSA-2018:2776
  • Red Hat Enterprise Linux Server Optional TUS (v. 6.6) python-perf 2.6.32-504.76.2.el6, kernel-debuginfo-common-x86_64 2.6.32-504.76.2.el6
    fixed: vendor fix RHSA-2018:2924

11 more fixed, 1 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-20-105-05 updated cvss 7.5

Siemens RUGGEDCOM, SCALANCE, SIMATIC, SINEMA (Update B)

  • Siemens RUGGEDCOM RM1224 <V6.1 Siemens SCALANCE M-800 / S615 <V6.1
    affected: fixed in V6.1
  • Siemens SCALANCE SC-600 <V2.0
    affected: fixed in V2.0
  • Siemens SCALANCE W700 IEEE 802.11a/b/g/n <V6.4
    affected: fixed in V6.4
  • Siemens SCALANCE W1700 IEEE 802.11ac <V2.0
    affected: fixed in V2.0
  • Siemens SIMATIC NET CP 1242-7 <V3.2 Siemens SIMATIC NET CP 1243-1 (incl.'SIPLUS variants) <V3.2 Siemens SIMATIC NET CP 1243-7 LTE EU <V3.2 Siemens SIMATIC NET CP 1243-7 LTE US <V3.2 Siemens SIMATIC NET CP 1243-8 IRC <V3.2
    affected: fixed in V3.2
  • Siemens SIMATIC NET CP 1542SP-1 <V2.1 Siemens SIMATIC NET CP 1542SP-1 IRC (incl.'SIPLUS variants) <V2.1
    affected: fixed in V2.1
  • Siemens SIMATIC NET CP 1543-1 (incl.'SIPLUS variants) <V2.2
    affected: fixed in V2.2
  • Siemens SIMATIC NET CP 1543SP-1 (incl.'SIPLUS variants) <V2.1
    affected: fixed in V2.1
show 2 more
  • Siemens SIMATIC RF185C <V1.3 Siemens SIMATIC RF186C <V1.3 Siemens SIMATIC RF186CI <V1.3 Siemens SIMATIC RF188C <V1.3 Siemens SIMATIC RF188CI <V1.3
    affected: fixed in V1.3
  • Siemens SINEMA Remote Connect Server >V1.1, <V2.0.1
    affected: fixed in V2.1

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

71.77% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

  • Linux Linux Kernel

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.