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Fencer Vulns
high 7.8

CVE-2019-19543 json

In the Linux kernel before 5.1.6, there is a use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c.

published 2019-12-03 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-9161

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits
0
none known

Summary

In the Linux kernel before 5.1.6, there is a use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c.

Patch / fix

  • linux linux_kernel 5.1.6
  • linux Debian 14, Debian 13, Debian 12 5.2.6-1

debian advisories DEBIAN-CVE-2019-19543

  • linux Ubuntu 18.04 LTS 4.15.0-60.67
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1047.49
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1041.43
  • linux-gcp Ubuntu 18.04 LTS 4.15.0-1042.45
  • linux-hwe Ubuntu 16.04 LTS 4.15.0-60.67~16.04.1
  • linux-hwe Ubuntu 18.04 LTS 5.0.0-27.28~18.04.1
  • linux-kvm Ubuntu 18.04 LTS 4.15.0-1043.43
  • linux-oem Ubuntu 18.04 LTS 4.15.0-1056.65

ubuntu advisories UBUNTU-CVE-2019-19543

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 8 4.18.0-240.el8
  • perf RHEL 8 4.18.0-240.el8
  • bpftool RHEL 8 4.18.0-240.el8
  • kernel-core RHEL 8 4.18.0-240.el8
  • kernel-tools RHEL 8 4.18.0-240.el8
  • python3-perf RHEL 8 4.18.0-240.el8
  • kernel-modules RHEL 8 4.18.0-240.el8
  • kernel-zfcpdump RHEL 8 4.18.0-240.el8

red hat advisories RHSA-2020:4431RHSA-2020:4609

  • 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
  • kernel-rt SLE Real Time 12 SP4 4.12.14-8.12.1
  • kernel-syms-rt SLE Real Time 12 SP4 4.12.14-8.12.1
  • kernel-rt_debug SLE Real Time 12 SP4 4.12.14-8.12.1
  • kernel-source-rt SLE Real Time 12 SP4 4.12.14-8.12.1

suse advisories SUSE-SU-2020:0613-1SUSE-SU-2020:0599-1SUSE-SU-2020:0584-1SUSE-SU-2020:0093-1SUSE-SU-2019:3389-1SUSE-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-2019-19543 updated cvss 6.7

kernel: use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c

  • Red Hat Enterprise Linux 7 perf, kernel, kernel-alt, python-perf, kernel-kdump, kernel-tools, +3 more
    affected: workaround, no fix planned “Will not fix”
  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-240.el8, kernel-debuginfo-common-aarch64 4.18.0-240.el8, kernel-debuginfo-common-ppc64le 4.18.0-240.el8 Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-240.el8, kernel 4.18.0-240.el8, bpftool 4.18.0-240.el8, kernel-core 4.18.0-240.el8, kernel-tools 4.18.0-240.el8, python3-perf 4.18.0-240.el8, +15 more
    fixed: vendor fix RHSA-2020:4431
  • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt 4.18.0-240.rt7.54.el8, kernel-rt-core 4.18.0-240.rt7.54.el8, kernel-rt-modules 4.18.0-240.rt7.54.el8, kernel-rt-debug-core 4.18.0-240.rt7.54.el8, kernel-rt-debug-modules 4.18.0-240.rt7.54.el8, kernel-rt-modules-extra 4.18.0-240.rt7.54.el8, +2 more Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-240.rt7.54.el8, kernel-rt-kvm 4.18.0-240.rt7.54.el8, kernel-rt-core 4.18.0-240.rt7.54.el8, kernel-rt-modules 4.18.0-240.rt7.54.el8, kernel-rt-debug-kvm 4.18.0-240.rt7.54.el8, kernel-rt-debug-core 4.18.0-240.rt7.54.el8, +4 more
    fixed: vendor fix RHSA-2020:4609
  • 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 Linux 7 kernel, bpftool, kernel-rt, kernel-rt-kvm, kernel-rt-trace, kernel-rt-debug-kvm, +1 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    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

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

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.