CVE-2022-3544

Service interruption via unregistered DAMON target leak

Published Oct 17, 2022 · Updated Apr 15, 2025

Memory leakage in Linux Kernel DAMON sysfs allows local users to exhaust kernel memory by configuring a target with an invalid PID. The damon_sysfs_add_target function allocates a damon_target but, when find_get_pid fails before the target is linked to its context, the cleanup routine cannot release that allocation. Repeated triggering requires local access to the privileged DAMON sysfs control files and can interrupt service through memory exhaustion.

CVSS severity5.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leakage in Linux Kernel DAMON sysfs allows local users to exhaust kernel memory by configuring a target with an invalid PID. The damon_sysfs_add_target function allocates a damon_target but, when find_get_pid fails before the target is linked to its context, the cleanup routine cannot release that allocation. Repeated triggering requires local access to the privileged DAMON sysfs control files and can interrupt service through memory exhaustion.

The record

CVE
CVE-2022-3544
Published
Oct 17, 2022
Updated
Apr 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-404, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 17, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=n/a

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.5VulDBCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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