CVE-2021-3669

Description

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.

CVSS Metrics

• v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 3%

Techniques & Countermeasures

• CWE-400•Uncontrolled Resource Consumption

  The product does not properly control the allocation and maintenance of a limited resource.

• 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•debian_linux

  10.0 | 11.0

• fedoraproject•fedora

  34

• ibm•spectrum copy data management

  ≥ 2.2.0.0, ≤ 2.2.15.0

• ibm•spectrum protect plus

  ≥ 10.1.0, ≤ 10.1.10.2

• redhat•build_of_quarkus

  ≥ 2.0, < 2.7

• redhat•codeready_linux_builder

  na

• redhat•developer_tools

  1.0

• redhat•enterprise_linux

  6.0 | 7.0 | 8.0

• redhat•enterprise_linux_aus

  8.6

• redhat•enterprise_linux_for_ibm_z_systems

  8.0

• redhat•enterprise_linux_for_ibm_z_systems_eus

  8.6

• redhat•enterprise_linux_for_power_little_endian

  8.0

• redhat•enterprise_linux_for_power_little_endian_eus

  8.6

• redhat•enterprise_linux_for_real_time

  8

• redhat•enterprise_linux_for_real_time_for_nfv

  8

• redhat•enterprise_linux_for_real_time_for_nfv_tus

  8.6

• redhat•enterprise_linux_for_real_time_tus

  8.6

• redhat•enterprise_linux_server_aus

  8.6

• redhat•enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions

  8.6

• redhat•enterprise_linux_server_tus

  8.6

• redhat•openshift_container_platform

  4.6 | 4.7 | 4.9

• redhat•virtualization_host

  4.0

References (5)

• https://bugzilla.redhat.com/show_bug.cgi?id=1986473
• https://bugzilla.redhat.com/show_bug.cgi?id=1980619
• https://access.redhat.com/security/cve/CVE-2021-3669
• https://security-tracker.debian.org/tracker/CVE-2021-3669
• https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html