CVE-2019-20812

Aliases:UBUNTU-CVE-2019-20812DEBIAN-CVE-2019-20812
Advisory lineage Upstream: 0 Downstream: 20
Modified
Published: 03 Jun 2020, 02:43
Last modified:05 Aug 2024, 02:53

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.44% LOW
0% probability +0.37%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Jun 2020, 02:43
Published
Vulnerability first disclosed
05 Aug 2024, 02:53
Last Modified
Vulnerability information updated

Description

An issue was discovered in the Linux kernel before 5.4.7. The prb_calc_retire_blk_tmo() function in net/packet/af_packet.c can result in a denial of service (CPU consumption and soft lockup) in a certain failure case involving TPACKET_V3, aka CID-b43d1f9f7067.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.9AV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 0.44%• Percentile: 38%

Techniques & Countermeasures

  • CWE-400•Uncontrolled Resource Consumption

    The product does not properly control the allocation and maintenance of a limited resource.

Affected Systems

  • debian•linux

    < 5.4.8-1 | < 5.4.8-1 | < 5.4.8-1 | < 5.4.8-1

  • ubuntu•linux

    all | < 4.4.0-173.203 | < 4.15.0-88.88

  • ubuntu•linux-aws

    < 4.4.0-1061.65 | < 4.4.0-1101.112 | < 4.15.0-1060.62

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-fips

    < 4.15.0-2018.18 | all

  • ubuntu•linux-aws-hwe

    < 4.15.0-1060.62~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1071.76~14.04.1 | < 4.15.0-1071.76 | all

  • ubuntu•linux-azure-5.3

    < 5.3.0-1013.14~18.04.1

  • 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

    < 4.4.0-1028.33 | all

  • ubuntu•linux-gcp

    < 4.15.0-1055.59 | all

  • ubuntu•linux-gcp-5.3

    < 5.3.0-1012.13~18.04.1

  • ubuntu•linux-gcp-edge

    all

  • ubuntu•linux-gcp-fips

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-gke-4.15

    < 4.15.0-1052.55

  • ubuntu•linux-gke-5.0

    < 5.0.0-1030.31

  • ubuntu•linux-gke-5.3

    < 5.3.0-1012.13~18.04.1

  • ubuntu•linux-hwe

    < 4.15.0-88.88~16.04.1 | < 5.3.0-40.32~18.04.1

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1065.72 | < 4.15.0-1053.53

  • ubuntu•linux-lts-xenial

    < 4.4.0-173.203~14.04.1

  • ubuntu•linux-oem

    < 4.15.0-1073.83

  • ubuntu•linux-oem-osp1

    < 5.0.0-1039.44

  • ubuntu•linux-oracle

    < 4.15.0-1033.36~16.04.1 | < 4.15.0-1033.36

  • ubuntu•linux-oracle-5.0

    all

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.4.0-1128.137 | < 4.15.0-1055.59 | all

  • ubuntu•linux-raspi2-5.3

    < 5.3.0-1018.20~18.04.1

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all

  • ubuntu•linux-snapdragon

    < 4.4.0-1132.140 | < 4.15.0-1072.79

  • linux•linux_kernel

    < 5.4.7

References (9)