CVE-2021-3759

MEDIUM
5.5
CVSS Score
Published: August 23, 2022 at 12:00 AM UTC
Updated: October 14, 2026 at 10:17 AM UTC
3 products affected across 3 vendorsLinux KernelDebian LinuxKernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.4%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
All versions
Vendor states this is fixed in 5.15-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400CWE-770

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