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Fencer Vulns
high 7.4

CVE-2019-5108 in the critical feed json

An exploitable denial-of-service vulnerability exists in the Linux kernel prior to mainline 5.3.

published 2019-12-23 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-14713

cvss
7.4
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
10.1%
EPSS 10.1% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

An exploitable denial-of-service vulnerability exists in the Linux kernel prior to mainline 5.3. An attacker could exploit this vulnerability by triggering AP to send IAPP location updates for stations before the required authentication process has completed. This could lead to different denial-of-service scenarios, either by causing CAM table attacks, or by leading to traffic flapping if faking already existing clients in other nearby APs of the same wireless infrastructure. An attacker can forge Authentication and Association Request packets to trigger this vulnerability.

Patch / fix

  • linux linux_kernel 5.3
  • linux Debian 14, Debian 13, Debian 12 5.3.7-1

debian advisories DEBIAN-CVE-2019-5108

  • linux Ubuntu 16.04 LTS 4.4.0-174.204
  • linux Ubuntu 18.04 LTS 4.15.0-88.88
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1102.113
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1060.62
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1055.59
  • linux-gcp Ubuntu 18.04 LTS 5.0.0-1031.32
  • linux-hwe Ubuntu 16.04 LTS 4.15.0-88.88~16.04.1
  • linux-hwe Ubuntu 18.04 LTS 5.3.0-26.28~18.04.1

ubuntu advisories UBUNTU-CVE-2019-5108

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 4.14.0-115.19.1.el7a
  • perf RHEL 7 4.14.0-115.19.1.el7a
  • kernel RHEL 7 4.14.0-115.19.1.el7a
  • python-perf RHEL 7 4.14.0-115.19.1.el7a
  • kernel-tools RHEL 7 4.14.0-115.19.1.el7a
  • kernel-tools-libs RHEL 7 4.14.0-115.19.1.el7a
  • kernel-bootwrapper RHEL 7 4.14.0-115.19.1.el7a
  • kernel-abi-whitelists RHEL 7 4.14.0-115.19.1.el7a

red hat advisories RHSA-2020:1493RHSA-2020:1016RHSA-2020:1567RHSA-2020:1769RHBA-2020:3527

  • kernel-syms SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +1 more 4.4.121-92.129.1
  • kernel-source SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +1 more 4.4.121-92.129.1
  • kernel-default SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.4.121-92.129.1
  • kgraft-patch-SLE12-SP2_Update_34 SLES for SAP 12 SP2, SLES 12 SP2-LTSS, OpenStack Cloud 7 1-3.3.1
  • kernel-syms SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 4.4.180-94.116.1
  • kernel-source SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 4.4.180-94.116.1
  • kernel-default SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +5 more 4.4.180-94.116.1
  • kgraft-patch-SLE12-SP3_Update_31 SLES for SAP 12 SP3, SLES 12 SP3-LTSS, OpenStack Cloud Crowbar 8 +3 more 1-4.3.1

suse advisories SUSE-SU-2020:14442-1SUSE-SU-2020:1255-1SUSE-SU-2020:1275-1SUSE-SU-2020:0940-1SUSE-SU-2020:0868-1

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-2019-5108 updated cvss 6.5

kernel: triggering AP to send IAPP location updates for stations before the required authentication process has completed can lead to DoS

  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    affected: workaround, no fix planned “At this time there is no known mitigations to this issue other than to install the updated kernel package.”
  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-193.el8, kernel-debuginfo-common-aarch64 4.18.0-193.el8, kernel-debuginfo-common-ppc64le 4.18.0-193.el8 Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-193.el8, kernel 4.18.0-193.el8, bpftool 4.18.0-193.el8, kernel-core 4.18.0-193.el8, kernel-tools 4.18.0-193.el8, python3-perf 4.18.0-193.el8, +15 more
    fixed: vendor fix “At this time there is no known mitigations to this issue other than to install the updated kernel package.” RHSA-2020:1769
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1127.el7, kernel 3.10.0-1127.el7, bpftool 3.10.0-1127.el7, python-perf 3.10.0-1127.el7, kernel-tools 3.10.0-1127.el7, kernel-tools-libs 3.10.0-1127.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1127.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-1127.el7, kernel 3.10.0-1127.el7, bpftool 3.10.0-1127.el7, python-perf 3.10.0-1127.el7, kernel-tools 3.10.0-1127.el7, kernel-tools-libs 3.10.0-1127.el7, +2 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1127.el7
    fixed: vendor fix “At this time there is no known mitigations to this issue other than to install the updated kernel package.” RHSA-2020:1016
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) perf 4.14.0-115.19.1.el7a, kernel 4.14.0-115.19.1.el7a, kernel-alt 4.14.0-115.19.1.el7a, python-perf 4.14.0-115.19.1.el7a, kernel-tools 4.14.0-115.19.1.el7a, kernel-tools-libs 4.14.0-115.19.1.el7a, +3 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debuginfo-common-ppc64le 4.14.0-115.19.1.el7a
    fixed: vendor fix “At this time there is no known mitigations to this issue other than to install the updated kernel package.” RHSA-2020:1493
  • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1127.19.1.rt56.1116.el7, kernel-rt-kvm 3.10.0-1127.19.1.rt56.1116.el7, kernel-rt-trace 3.10.0-1127.19.1.rt56.1116.el7, kernel-rt-debug-kvm 3.10.0-1127.19.1.rt56.1116.el7, kernel-rt-trace-kvm 3.10.0-1127.19.1.rt56.1116.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1127.19.1.rt56.1116.el7
    fixed: vendor fix “At this time there is no known mitigations to this issue other than to install the updated kernel package.” RHBA-2020:3527
  • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt 4.18.0-193.rt13.51.el8, kernel-rt-core 4.18.0-193.rt13.51.el8, kernel-rt-modules 4.18.0-193.rt13.51.el8, kernel-rt-debug-core 4.18.0-193.rt13.51.el8, kernel-rt-debug-modules 4.18.0-193.rt13.51.el8, kernel-rt-modules-extra 4.18.0-193.rt13.51.el8, +2 more Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-193.rt13.51.el8, kernel-rt-kvm 4.18.0-193.rt13.51.el8, kernel-rt-core 4.18.0-193.rt13.51.el8, kernel-rt-modules 4.18.0-193.rt13.51.el8, kernel-rt-debug-kvm 4.18.0-193.rt13.51.el8, kernel-rt-debug-core 4.18.0-193.rt13.51.el8, +4 more
    fixed: vendor fix “At this time there is no known mitigations to this issue other than to install the updated kernel package.” RHSA-2020:1567
  • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-1127.19.1.rt56.1116.el7, kernel-rt-trace 3.10.0-1127.19.1.rt56.1116.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1127.19.1.rt56.1116.el7
    fixed: vendor fix “At this time there is no known mitigations to this issue other than to install the updated kernel package.” RHBA-2020:3527
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1127.el7, kernel 3.10.0-1127.el7, bpftool 3.10.0-1127.el7, python-perf 3.10.0-1127.el7, kernel-kdump 3.10.0-1127.el7, kernel-tools 3.10.0-1127.el7, +7 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1127.el7, kernel-debuginfo-common-x86_64 3.10.0-1127.el7, kernel-debuginfo-common-ppc64le 3.10.0-1127.el7 Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-1127.el7, kernel 3.10.0-1127.el7, bpftool 3.10.0-1127.el7, python-perf 3.10.0-1127.el7, kernel-tools 3.10.0-1127.el7, kernel-tools-libs 3.10.0-1127.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1127.el7
    fixed: vendor fix “At this time there is no known mitigations to this issue other than to install the updated kernel package.” RHSA-2020:1016

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

Exploit prediction

10.11% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • talosintelligence.com https://talosintelligence.com/vulnerability_reports/TALOS-2019-0900 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 7.4 CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 3.3 AV:A/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • n/a Linux kernel

Classification

Weakness
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.