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Fencer Vulns
medium 4.0

CVE-2019-19073 json

Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c in the Linux kernel through 5.3.11 allow attackers to cause a denial of service (m…

published 2019-11-18 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-8712

cvss
4.0
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c in the Linux kernel through 5.3.11 allow attackers to cause a denial of service (memory consumption) by triggering wait_for_completion_timeout() failures. This affects the htc_config_pipe_credits() function, the htc_setup_complete() function, and the htc_connect_service() function, aka CID-853acf7caf10.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 5.4.6-1

debian advisories DEBIAN-CVE-2019-19073

  • linux Ubuntu 16.04 LTS 4.4.0-190.220
  • linux Ubuntu 18.04 LTS 4.15.0-118.119
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1114.127
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1083.87
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1084.95~16.04.1
  • linux-hwe Ubuntu 16.04 LTS 4.15.0-118.119~16.04.1
  • linux-kvm Ubuntu 16.04 LTS 4.4.0-1080.87
  • linux-kvm Ubuntu 18.04 LTS 4.15.0-1075.76

ubuntu advisories UBUNTU-CVE-2019-19073

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-rt RHEL 8 4.18.0-193.rt13.51.el8
  • kernel-rt-kvm RHEL 8 4.18.0-193.rt13.51.el8
  • kernel-rt-core RHEL 8 4.18.0-193.rt13.51.el8
  • kernel-rt-modules RHEL 8 4.18.0-193.rt13.51.el8
  • kernel-rt-debug-kvm RHEL 8 4.18.0-193.rt13.51.el8
  • kernel-rt-debug-core RHEL 8 4.18.0-193.rt13.51.el8
  • kernel-rt-debug-modules RHEL 8 4.18.0-193.rt13.51.el8
  • kernel-rt-modules-extra RHEL 8 4.18.0-193.rt13.51.el8

red hat advisories RHSA-2020:1567RHSA-2020:1769

  • 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-rt Real Time Module 15 SP1 4.12.14-14.17.1
  • kernel-syms-rt Real Time Module 15 SP1 4.12.14-14.17.1
  • kernel-rt_debug Real Time Module 15 SP1 4.12.14-14.17.1
  • kernel-source-rt Real Time Module 15 SP1 4.12.14-14.17.1

suse advisories SUSE-SU-2020:1255-1SUSE-SU-2020:14354-1SUSE-SU-2020:0613-1SUSE-SU-2020:0599-1SUSE-SU-2020:0093-1SUSE-SU-2019:3381-1

  • kernel-syms openSUSE Leap 15.1 4.12.14-lp151.28.36.1
  • kernel-obs-qa openSUSE Leap 15.1 4.12.14-lp151.28.36.1
  • kernel-source openSUSE Leap 15.1 4.12.14-lp151.28.36.1
  • kernel-default openSUSE Leap 15.1 4.12.14-lp151.28.36.1
  • kernel-vanilla openSUSE Leap 15.1 4.12.14-lp151.28.36.1
  • kernel-kvmsmall openSUSE Leap 15.1 4.12.14-lp151.28.36.1
  • kernel-obs-build openSUSE Leap 15.1 4.12.14-lp151.28.36.1

opensuse advisories openSUSE-SU-2019:2675-1

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-2019-19073 updated cvss 4.0

kernel: Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c in the Linux kernel (DOS)

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, kernel-alt, python-perf, +9 more
    affected: no fix available, no fix planned “Will not fix”
  • Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    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 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 RHSA-2020:1567
  • 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

0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-401 Missing Release of Memory after Effective Lifetime
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.