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Fencer Vulns
critical 9.8

CVE-2019-16746 in the critical feed json

An issue was discovered in net/wireless/nl80211.c in the Linux kernel through 5.2.17.

published 2019-09-24 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-7286

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
12.7%
EPSS 12.7% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

An issue was discovered in net/wireless/nl80211.c in the Linux kernel through 5.2.17. It does not check the length of variable elements in a beacon head, leading to a buffer overflow.

Patch / fix

  • linux linux_kernel 3.16.79, 4.4.197, 4.9.197, 4.14.149, 4.19.79, 5.3.6
  • linux Debian 14, Debian 13, Debian 12 5.3.7-1

debian advisories DEBIAN-CVE-2019-16746

  • linux Ubuntu 16.04 LTS 4.4.0-168.197
  • linux Ubuntu 18.04 LTS 4.15.0-72.81
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1098.109
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1056.58
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1050.53
  • linux-gcp Ubuntu 18.04 LTS 5.0.0-1026.27~18.04.1
  • linux-hwe Ubuntu 16.04 LTS 4.15.0-72.81~16.04.1
  • linux-hwe Ubuntu 18.04 LTS 5.0.0-37.40~18.04.1

ubuntu advisories UBUNTU-CVE-2019-16746

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 RHEL 7 3.10.0-1127.el7
  • perf RHEL 7 3.10.0-1127.el7
  • bpftool RHEL 7 3.10.0-1127.el7
  • python-perf RHEL 7 3.10.0-1127.el7
  • kernel-kdump RHEL 7 3.10.0-1127.el7
  • kernel-tools RHEL 7 3.10.0-1127.el7
  • kernel-tools-libs RHEL 7 3.10.0-1127.el7
  • kernel-bootwrapper RHEL 7 3.10.0-1127.el7

red hat advisories RHSA-2020:1016RHSA-2020:1769RHSA-2020:1070

  • kernel-syms SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 4.4.180-94.130.1
  • kernel-source SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 4.4.180-94.130.1
  • kernel-default SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +5 more 4.4.180-94.130.1
  • kgraft-patch-SLE12-SP3_Update_35 SLES for SAP 12 SP3, SLES 12 SP3-LTSS, OpenStack Cloud Crowbar 8 +3 more 1-4.3.1
  • kernel-syms SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +1 more 4.4.121-92.141.1
  • kernel-source SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +1 more 4.4.121-92.141.1
  • kernel-default SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.4.121-92.141.1
  • kgraft-patch-SLE12-SP2_Update_37 SLES for SAP 12 SP2, SLES 12 SP2-LTSS, OpenStack Cloud 7 1-3.3.1

suse advisories SUSE-SU-2021:14630-1SUSE-SU-2020:2582-1SUSE-SU-2020:2576-1SUSE-SU-2020:2513-1SUSE-SU-2020:2505-1SUSE-SU-2020:2526-1

  • kernel-syms openSUSE Leap 15.1 4.12.14-lp151.28.59.1
  • kernel-obs-qa openSUSE Leap 15.1 4.12.14-lp151.28.59.1
  • kernel-source openSUSE Leap 15.1 4.12.14-lp151.28.59.1
  • kernel-default openSUSE Leap 15.1 4.12.14-lp151.28.59.1
  • kernel-vanilla openSUSE Leap 15.1 4.12.14-lp151.28.59.1
  • kernel-kvmsmall openSUSE Leap 15.1 4.12.14-lp151.28.59.1
  • kernel-obs-build openSUSE Leap 15.1 4.12.14-lp151.28.59.1
  • kernel-syms openSUSE Leap 15.1 4.12.14-lp151.28.40.1

opensuse advisories openSUSE-SU-2020:1153-1openSUSE-SU-2020:0336-1

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-2019-16746 updated cvss 8.4

kernel: buffer-overflow hardening in WiFi beacon validation code.

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, kernel-alt, python-perf, kernel-kdump, kernel-tools, +3 more
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 8 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +6 more
    affected: no fix available
  • Red Hat Enterprise MRG 2 kernel
    affected: no fix planned “Will not fix”
  • 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 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 RHSA-2020:1016
  • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-1127.rt56.1093.el7, kernel-rt-trace 3.10.0-1127.rt56.1093.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1127.rt56.1093.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1127.rt56.1093.el7, kernel-rt-kvm 3.10.0-1127.rt56.1093.el7, kernel-rt-trace 3.10.0-1127.rt56.1093.el7, kernel-rt-debug-kvm 3.10.0-1127.rt56.1093.el7, kernel-rt-trace-kvm 3.10.0-1127.rt56.1093.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1127.rt56.1093.el7
    fixed: vendor fix RHSA-2020:1070
  • 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 RHSA-2020:1016
  • Red Hat Enterprise Linux 5 kernel
    not affected: vulnerable code not present

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

12.65% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input
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.