CVE-2021-3759

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Summary

CVECVE-2021-3759
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-08-23 16:15:09 UTC
Updated2026-10-14 10:17:48 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-400 | CWE-770 | CWE-400 CWE-400 - Uncontrolled Resource Consumption

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 10.0 All All All
Operating System Linux Linux Kernel - All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Kernel affected Fixed in Linux kernel 5.15-rc1 Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected V1.1 custom Not specified

References

ReferenceSourceLinkTags
Red Hat Customer Portal - Access to 24x7 support and knowledge af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
[SECURITY] [DLA 3244-1] linux-5.10 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
[PATCH] memcg: charge semaphores and sem_undo objects - Yutian Yang af854a3a-2127-422b-91ae-364da2661108 lore.kernel.org
cert-portal.siemens.com/productcert/html/ssa-794697.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
1999675 – (CVE-2021-3759) CVE-2021-3759 kernel: unaccounted ipc objects in Linux kernel lead to breaking memcg limits and DoS attacks af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Third Party Advisory
[PATCH] memcg: charge semaphores and sem_undo objects - Yutian Yang MITRE lore.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159825 Oracle Enterprise Linux Security Update for kernel (ELSA-2022-1988)
  • 181367 Debian Security Update for linux (CVE-2021-3759)
  • 181440 Debian Security Update for linux-5.10 (DLA 3244-1)
  • 198542 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5115-1)
  • 198543 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5117-1)
  • 198548 Ubuntu Security Notification for Linux kernel (Azure) Vulnerabilities (USN-5120-1)
  • 198561 Ubuntu Security Notification for Linux kernel Vulnerability (USN-5135-1)
  • 198562 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5136-1)
  • 198563 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5137-1)
  • 198565 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5137-2)
  • 240275 Red Hat Update for kernel-rt (RHSA-2022:1975)
  • 240298 Red Hat Update for kernel security (RHSA-2022:1988)
  • 354239 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.10-2022-023
  • 354275 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2022-039
  • 378468 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-20230042)
  • 378473 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX2-SA-2023:0021)
  • 378512 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2023:0042)
  • 378710 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2023:0079)
  • 6140352 AWS Bottlerocket Security Update for kernel (GHSA-6xv5-7462-p246)
  • 671159 EulerOS Security Update for kernel (EulerOS-SA-2021-2805)
  • 671219 EulerOS Security Update for kernel (EulerOS-SA-2022-1030)
  • 671225 EulerOS Security Update for kernel (EulerOS-SA-2022-1010)
  • 751137 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1271-1)
  • 751155 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3192-1)
  • 751160 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3179-1)
  • 751163 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3206-1)
  • 751170 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3205-1)
  • 751217 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3387-1)
  • 751437 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3876-1)
  • 751441 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3876-1)
  • 751476 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3972-1)
  • 940517 AlmaLinux Security Update for kernel (ALSA-2022:1988)

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