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.

Score

CVSS 3.1 5.5 Medium

Status

Modified - secalert@redhat.com

Published

2022-08-26

Last modified

2025-11-03

Weaknesses

CWE-400, CWE-770

Affected products

• Debian Linux (Debian)
• Fedora (Fedoraproject)
• Spectrum Copy Data Management (Ibm)
• Spectrum Protect Plus (Ibm)
• Linux Kernel (Linux)
• Build Of Quarkus (Redhat)
• Codeready Linux Builder (Redhat)
• Developer Tools (Redhat)
• Enterprise Linux (Redhat)
• Enterprise Linux Aus (Redhat)
• Enterprise Linux For Ibm Z Systems (Redhat)
• Enterprise Linux For Ibm Z Systems Eus (Redhat)
• Enterprise Linux For Power Little Endian (Redhat)
• Enterprise Linux For Power Little Endian Eus (Redhat)
• Enterprise Linux For Real Time (Redhat)
• Enterprise Linux For Real Time For Nfv (Redhat)
• Enterprise Linux For Real Time For Nfv Tus (Redhat)
• Enterprise Linux For Real Time Tus (Redhat)
• Enterprise Linux Server Aus (Redhat)
• Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions (Redhat)
• Enterprise Linux Server Tus (Redhat)
• Openshift Container Platform (Redhat)
• Virtualization Host (Redhat)

References

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