UBUNTU-CVE-2020-8648

Advisory lineage Upstream: 1 Downstream: 6
Upstream
CVE-2020-8648
Published: 06 Feb 2020, 01:15
Last modified:03 Jun 2026, 13:34

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7.1 HIGH
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

06 Feb 2020, 01:15
Published
Vulnerability first disclosed
03 Jun 2026, 13:34
Last Modified
Vulnerability information updated

Description

There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the n_tty_receive_buf_common function in drivers/tty/n_tty.c.

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected Systems

  • ubuntu•linux

    all | < 4.4.0-178.208 | < 4.15.0-99.100

  • ubuntu•linux-aws

    < 4.4.0-1066.70 | < 4.4.0-1106.117 | < 4.15.0-1066.70

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.3

    < 5.3.0-1017.18~18.04.1

  • ubuntu•linux-aws-fips

    < 4.15.0-2018.18 | all

  • ubuntu•linux-aws-hwe

    < 4.15.0-1066.70~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1082.92~14.04.1 | < 4.15.0-1082.92~16.04.1 | all

  • ubuntu•linux-azure-5.3

    < 5.3.0-1020.21~18.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2006.7 | all

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-fips

    < 4.4.0-1033.38 | all | < 4.15.0-1029.34

  • ubuntu•linux-gcp

    < 4.15.0-1061.65 | all

  • ubuntu•linux-gcp-5.3

    < 5.3.0-1018.19~18.04.1

  • ubuntu•linux-gcp-edge

    all

  • ubuntu•linux-gcp-fips

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-gke-4.15

    < 4.15.0-1058.61

  • ubuntu•linux-gke-5.0

    < 5.0.0-1035.36

  • ubuntu•linux-gke-5.3

    < 5.3.0-1018.19~18.04.1

  • ubuntu•linux-hwe

    < 4.15.0-99.100~16.04.1 | < 5.3.0-51.44~18.04.2

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1070.77 | < 4.15.0-1059.60

  • ubuntu•linux-lts-xenial

    < 4.4.0-178.208~14.04.1

  • ubuntu•linux-nvidia

    all

  • ubuntu•linux-oem

    < 4.15.0-1080.90

  • ubuntu•linux-oem-osp1

    < 5.0.0-1050.55

  • ubuntu•linux-oracle

    < 4.15.0-1038.42~16.04.1 | < 4.15.0-1038.42

  • ubuntu•linux-oracle-5.0

    all

  • ubuntu•linux-oracle-5.3

    < 5.3.0-1016.18~18.04.1

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.4.0-1132.141 | < 4.15.0-1061.65 | all

  • ubuntu•linux-raspi2-5.3

    < 5.3.0-1023.25~18.04.1

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all

  • ubuntu•linux-snapdragon

    < 4.4.0-1136.144 | < 4.15.0-1077.84

References (8)