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 -

21 Nov 2024, 06:22

Type Values Removed Values Added
References () https://access.redhat.com/security/cve/CVE-2021-3669 - Issue Tracking, Third Party Advisory () https://access.redhat.com/security/cve/CVE-2021-3669 - Issue Tracking, Third Party Advisory
References () https://bugzilla.redhat.com/show_bug.cgi?id=1980619 - Issue Tracking, Third Party Advisory () https://bugzilla.redhat.com/show_bug.cgi?id=1980619 - Issue Tracking, Third Party Advisory
References () https://bugzilla.redhat.com/show_bug.cgi?id=1986473 - Issue Tracking, Permissions Required () https://bugzilla.redhat.com/show_bug.cgi?id=1986473 - Issue Tracking, Permissions Required
References () https://security-tracker.debian.org/tracker/CVE-2021-3669 - Issue Tracking, Third Party Advisory () https://security-tracker.debian.org/tracker/CVE-2021-3669 - Issue Tracking, Third Party Advisory

07 Jul 2023, 19:16

Type Values Removed Values Added
References (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1986473 - Permissions Required (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1986473 - Issue Tracking, Permissions Required
CWE CWE-400 CWE-770
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

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

ibm

  • spectrum_copy_data_management
  • spectrum_protect_plus

debian

  • debian_linux

fedoraproject

  • fedora

linux

  • linux_kernel
CWE
CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling