CVE-2021-27365

Aliases:UBUNTU-CVE-2021-27365DEBIAN-CVE-2021-27365
Advisory lineage Upstream: 0 Downstream: 51
Analyzed
Published: 07 Mar 2021, 04:22
Last modified:03 Aug 2024, 20:48

Vulnerability Summary

Overall Risk (default)
medium
42/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
2.08% LOW
2% probability +1.59%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

07 Mar 2021, 04:22
Published
Vulnerability first disclosed
03 Aug 2024, 20:48
Last Modified
Vulnerability information updated

Description

An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 4.6AV:L/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 2.08%• Percentile: 81%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • debian•linux

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

  • ubuntu•linux

    < 3.13.0-185.236 | < 4.4.0-206.238 | < 4.15.0-139.143 | < 5.4.0-70.78

  • ubuntu•linux-aws

    < 4.4.0-1088.92 | < 4.4.0-1124.138 | < 4.15.0-1096.103 | < 5.4.0-1041.43

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1041.43~18.04.1

  • ubuntu•linux-aws-fips

    < 4.15.0-2039.41 | all | < 5.4.0-1069.73+fips2

  • ubuntu•linux-aws-hwe

    < 4.15.0-1096.103~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1110.122~14.04.1 | < 4.15.0-1110.122~16.04.1 | all | < 5.4.0-1043.45

  • ubuntu•linux-azure-4.15

    < 4.15.0-1110.122

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1043.45~18.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2022.25 | all | < 5.4.0-1073.76+fips1

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-dell300x

    < 4.15.0-1015.19

  • ubuntu•linux-fips

    < 4.4.0-1058.64 | all | < 4.15.0-1055.63

  • ubuntu•linux-gcp

    < 4.15.0-1095.108~16.04.1 | all | < 5.4.0-1040.43

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1095.108

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1040.43~18.04.1

  • ubuntu•linux-gcp-edge

    all

  • ubuntu•linux-gcp-fips

    all | < 5.4.0-1067.71~20.04.1

  • ubuntu•linux-gke

    < 5.4.0-1039.41

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-gke-5.3

    < 5.3.0-1041.44

  • ubuntu•linux-gke-5.4

    < 5.4.0-1039.41~18.04.1

  • ubuntu•linux-gkeop

    < 5.4.0-1012.13

  • ubuntu•linux-gkeop-5.4

    < 5.4.0-1012.13~18.04.1

  • ubuntu•linux-hwe

    < 4.15.0-139.143~16.04.1 | < 5.3.0-72.68

  • ubuntu•linux-hwe-5.4

    < 5.4.0-70.78~18.04.1

  • ubuntu•linux-hwe-5.8

    < 5.8.0-48.54~20.04.1

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1090.99 | < 4.15.0-1087.89 | < 5.4.0-1036.37

  • ubuntu•linux-lts-xenial

    < 4.4.0-206.238~14.04.1

  • ubuntu•linux-oem

    all

  • ubuntu•linux-oem-5.10

    < 5.10.0-1019.20

  • ubuntu•linux-oem-5.6

    < 5.6.0-1052.56

  • ubuntu•linux-oracle

    < 4.15.0-1067.75~16.04.1 | < 4.15.0-1067.75 | < 5.4.0-1041.44

  • ubuntu•linux-oracle-5.0

    all

  • ubuntu•linux-oracle-5.3

    all

  • ubuntu•linux-oracle-5.4

    < 5.4.0-1041.44~18.04.1

  • ubuntu•linux-raspi

    < 5.4.0-1032.35

  • ubuntu•linux-raspi-5.4

    < 5.4.0-1032.35~18.04.1

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.4.0-1148.158 | < 4.15.0-1081.86 | all

  • ubuntu•linux-raspi2-5.3

    < 5.3.0-1038.40

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all

Showing first 50 affected entries in server-rendered view.

References (19)