CVE-2021-3759

A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

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-2021-3759	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1999675	Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html	Mailing List Third Party Advisory
https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive%40gmail.com/
https://access.redhat.com/security/cve/CVE-2021-3759	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1999675	Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html	Mailing List Third Party Advisory
https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive%40gmail.com/
https://cert-portal.siemens.com/productcert/html/ssa-794697.html

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

History

14 Oct 2026, 10:17

Type	Values Removed	Values Added
References		() https://cert-portal.siemens.com/productcert/html/ssa-794697.html -

Information

Published : 2022-08-23 16:15

Updated : 2026-10-14 10:17

NVD link : CVE-2021-3759

Mitre link : CVE-2021-3759

CVE.ORG link : CVE-2021-3759

JSON object : View

Products Affected

debian

debian_linux

linux

linux_kernel

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling

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