CVE-2020-25639

Aliases:UBUNTU-CVE-2020-25639DEBIAN-CVE-2020-25639
Advisory lineage Upstream: 0 Downstream: 21
Modified
Published: 04 Mar 2021, 21:56
Last modified:04 Aug 2024, 15:40

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
4.9 MEDIUM
v2.0 (nvd)
EPSS Score
0.37% LOW
0% probability +0.24%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

04 Mar 2021, 21:56
Published
Vulnerability first disclosed
04 Aug 2024, 15:40
Last Modified
Vulnerability information updated

Description

A NULL pointer dereference flaw was found in the Linux kernel's GPU Nouveau driver functionality in versions prior to 5.12-rc1 in the way the user calls ioctl DRM_IOCTL_NOUVEAU_CHANNEL_ALLOC. This flaw allows a local user to crash the system.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.4CVSS:3.1/AV:L/AC:L/PR:H/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: 0.37%• Percentile: 30%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • debian•linux

    < 5.10.19-1 | < 5.10.19-1 | < 5.10.19-1 | < 5.10.19-1

  • ubuntu•linux

    < 5.4.0-73.82

  • ubuntu•linux-aws

    < 5.4.0-1048.50

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1048.50~18.04.1

  • ubuntu•linux-aws-fips

    < 5.4.0-1069.73+fips2 | all

  • ubuntu•linux-azure

    all | < 5.4.0-1047.49

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1047.49~18.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fips

    < 5.4.0-1073.76+fips1 | all

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-fips

    all

  • ubuntu•linux-gcp

    all | < 5.4.0-1043.46

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1043.46~18.04.1

  • ubuntu•linux-gcp-edge

    all

  • ubuntu•linux-gcp-fips

    < 5.4.0-1067.71~20.04.1 | all

  • ubuntu•linux-gke

    < 5.4.0-1043.45

  • ubuntu•linux-gke-5.4

    < 5.4.0-1043.45~18.04.1

  • ubuntu•linux-gkeop

    < 5.4.0-1015.16

  • ubuntu•linux-gkeop-5.4

    < 5.4.0-1015.16~18.04.1

  • ubuntu•linux-hwe

    all

  • ubuntu•linux-hwe-5.4

    < 5.4.0-73.82~18.04.1

  • ubuntu•linux-hwe-5.8

    < 5.8.0-53.60~20.04.1

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 5.4.0-1039.40

  • ubuntu•linux-oem-5.10

    < 5.10.0-1021.22

  • ubuntu•linux-oem-5.6

    all

  • ubuntu•linux-oracle

    < 5.4.0-1045.49

  • ubuntu•linux-oracle-5.0

    all

  • ubuntu•linux-oracle-5.3

    all

  • ubuntu•linux-oracle-5.4

    < 5.4.0-1044.47~18.04.1

  • ubuntu•linux-raspi

    < 5.4.0-1035.38

  • ubuntu•linux-raspi-5.4

    < 5.4.0-1035.38~18.04.1

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    all

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all

  • ubuntu•linux-riscv-5.8

    < 5.8.0-25.27~20.04.1

  • fedoraproject•fedora

    32 | 33

  • linux•linux_kernel

    ≤ 5.11.2

  • redhat•enterprise_linux

    5.0 | 6.0 | 7.0 | 8.0

  • redhat•messaging_realtime_grid

    2.0

  • redhat•openshift_container_platform

    4.4 | 4.5 | 4.6

References (11)