CVE-2021-3669

kernel: reading /proc/sysvipc/shm does not scale with large shared memory segment counts

Published Aug 26, 2022 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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.

Analysis

No analysis available yet

Remediation

No remediation available yet

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3912-1 linux security update
Ubuntu USN Ubuntu USN USN-5924-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-5927-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-5975-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5980-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5981-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5984-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5985-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5991-1 Linux kernel (GCP) vulnerabilities
Ubuntu USN Ubuntu USN USN-6001-1 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-6009-1 Linux kernel (GCP) vulnerabilities
Ubuntu USN Ubuntu USN USN-6013-1 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-6014-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6020-1 Linux kernel (BlueField) vulnerabilities
Ubuntu USN Ubuntu USN USN-6030-1 Linux kernel (Qualcomm Snapdragon) vulnerabilities
Ubuntu USN Ubuntu USN USN-6151-1 Linux kernel (Xilinx ZynqMP) vulnerabilities
Weaknesses
  • CWE-400

    Uncontrolled Resource Consumption

  • CWE-770

    Allocation of Resources Without Limits or Throttling

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 3, 2025, 9:44 PM
Reserved
Jul 29, 2021, 12:00 AM
Status
Modified
Published
Aug 26, 2022, 4:15 PM
Modified
Jun 17, 2026, 4:05 AM
Severity
Moderate
Public date
Aug 2, 2021, 6:02 AM