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CVE

CVE-2021-3669

A flaw was found in the Linux kernel. Measuring usage of the shared memory does not scale with large shared memory segme

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.

MEDIUM · CVSS 5.5 EPSS 0.00014
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-400Uncontrolled Resource Consumption
CWE-770Allocation of Resources Without Limits or Throttling
▤

Affected Products & Versions

21
linux kernelall versions
ibm spectrum copy data management>= 2.2.0.0 and <= 2.2.15.0
ibm spectrum protect plus>= 10.1.0 and <= 10.1.10.2
debian linuxall versions
fedoraproject fedoraall versions
redhat build of quarkus>= 2.0 and < 2.7
redhat developer toolsall versions
redhat enterprise linuxall versions
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 Aug 2022 · 04:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

29
rhsaRHSA-2022:1988Low
rhsaRHSA-2022:1975Moderate
usnUSN-6151-1
usnUSN-6030-1
usnUSN-6020-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2021-3669Issue TrackingThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1980619Issue TrackingThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1986473Issue TrackingPermissions Required
https://security-tracker.debian.org/tracker/CVE-2021-3669Issue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
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