CVE-2021-3669

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-3669
A flaw was found in the Linux kernel. Measuring usage of the shared memory does not scale with large shared memory segment counts which could lead to resource exhaustion and DoS.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://access.redhat.com/security/cve/CVE-2021-3669 Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1980619 Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1986473 Issue Tracking Permissions Required
https://security-tracker.debian.org/tracker/CVE-2021-3669 Issue Tracking Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-3669 Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1980619 Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1986473 Issue Tracking Permissions Required
https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
https://security-tracker.debian.org/tracker/CVE-2021-3669 Issue Tracking Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
OR cpe:2.3:a:ibm:spectrum_copy_data_management:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:spectrum_protect_plus:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Configuration 4 (hide)

cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

Configuration 5 (hide)

OR cpe:2.3:a:redhat:build_of_quarkus:*:*:*:*:*:*:*:*
cpe:2.3:a:redhat:developer_tools:1.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_aus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_real_time:8:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv:8:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv_tus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_real_time_tus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:*
OR cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:*

Configuration 7 (hide)

AND
OR cpe:2.3:a:redhat:openshift_container_platform:4.6:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift_container_platform:4.7:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift_container_platform:4.9:*:*:*:*:*:*:*
cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
History

03 Nov 2025, 22:15

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html -
Information

Published : 2022-08-26 16:15

Updated : 2025-11-03 22:15

NVD link : CVE-2021-3669

Mitre link : CVE-2021-3669

CVE.ORG link : CVE-2021-3669

JSON object : View

Products Affected

redhat

  • openshift_container_platform
  • enterprise_linux_for_real_time_tus
  • enterprise_linux_aus
  • virtualization_host
  • enterprise_linux_for_power_little_endian
  • enterprise_linux_for_ibm_z_systems
  • enterprise_linux_for_real_time_for_nfv_tus
  • codeready_linux_builder
  • enterprise_linux_for_real_time
  • enterprise_linux_server_aus
  • developer_tools
  • enterprise_linux_for_ibm_z_systems_eus
  • enterprise_linux_for_real_time_for_nfv
  • enterprise_linux_server_tus
  • enterprise_linux_eus
  • build_of_quarkus
  • enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
  • enterprise_linux
  • enterprise_linux_for_power_little_endian_eus

debian

  • debian_linux

ibm

  • spectrum_protect_plus
  • spectrum_copy_data_management

linux

  • linux_kernel

fedoraproject

  • fedora
CWE
CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling