CVE-2021-28038

Aliases:UBUNTU-CVE-2021-28038DEBIAN-CVE-2021-28038
Advisory lineage Upstream: 0 Downstream: 30
Modified
Published: 05 Mar 2021, 00:00
Last modified:03 Aug 2024, 21:33

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.71% LOW
1% probability +0.32%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

05 Mar 2021, 00:00
Published
Vulnerability first disclosed
03 Aug 2024, 21:33
Last Modified
Vulnerability information updated

Description

An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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: 0.71%• Percentile: 52%

Techniques & Countermeasures

  • CWE-770•Allocation of Resources Without Limits or Throttling

    The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Affected Systems

  • debian•linux

    < 5.10.24-1 | < 5.10.24-1 | < 5.10.24-1 | < 5.10.24-1

  • ubuntu•linux

    all | < 4.4.0-208.240 | < 4.15.0-143.147 | < 5.4.0-73.82

  • ubuntu•linux-aws

    < 4.4.0-1090.94 | < 4.4.0-1126.140 | < 4.15.0-1102.109 | < 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

    < 4.15.0-2044.46 | all | < 5.4.0-1069.73+fips2

  • ubuntu•linux-aws-hwe

    < 4.15.0-1102.109~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1114.127~14.04.1 | < 4.15.0-1114.127~16.04.1 | all | < 5.4.0-1047.49

  • ubuntu•linux-azure-4.15

    < 4.15.0-1114.127

  • 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-fde-5.15

    < 5.15.0-1114.123~20.04.1

  • ubuntu•linux-azure-fips

    < 4.15.0-2026.29 | all | < 5.4.0-1073.76+fips1

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-dell300x

    < 4.15.0-1018.22

  • ubuntu•linux-fips

    < 4.4.0-1060.66 | all | < 4.15.0-1059.67

  • ubuntu•linux-gcp

    < 4.15.0-1099.112~16.04.1 | all | < 5.4.0-1043.46

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1099.112

  • 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

    all | < 5.4.0-1067.71~20.04.1

  • ubuntu•linux-gke

    < 5.4.0-1043.45

  • ubuntu•linux-gke-4.15

    all

  • 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

    < 4.15.0-143.147~16.04.3 | all

  • ubuntu•linux-hwe-5.4

    < 5.4.0-73.82~18.04.1

  • ubuntu•linux-hwe-5.8

    < 5.8.0-55.62~20.04.1

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1091.100 | < 4.15.0-1091.93 | < 5.4.0-1039.40

  • ubuntu•linux-lts-xenial

    < 4.4.0-208.240~14.04.1

  • ubuntu•linux-oem

    all

  • ubuntu•linux-oem-5.10

    < 5.10.0-1021.22

  • ubuntu•linux-oem-5.6

    all

  • ubuntu•linux-oracle

    < 4.15.0-1071.79~16.04.1 | < 4.15.0-1071.79 | < 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

    < 4.4.0-1150.161 | < 4.15.0-1085.90 | all

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all

  • ubuntu•linux-riscv-5.8

    < 5.8.0-26.28~20.04.1

Showing first 50 affected entries in server-rendered view.

References (16)