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CVE-2021-3759

Date: August 22, 2022

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.

Severity Score

Related Resources (9)

https://nvd.nist.gov/vuln/detail/CVE-2021-3759
https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive%40gmail.com/
https://access.redhat.com/security/cve/CVE-2021-3759
https://security-tracker.debian.org/tracker/CVE-2021-3759
https://bugzilla.redhat.com/show_bug.cgi?id=1999675
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-3759
https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive@gmail.com/
https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html
https://www.mend.io/vulnerability-database/CVE-2021-3759

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption ('Resource Exhaustion')

CWE-400

Allocation of Resources Without Limits or Throttling

CWE-770

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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