CVE-2023-53202

Local service interruption via leaked dentry references

Published Sep 15, 2025 · Updated Sep 15, 2025

Memory leakage in the Linux kernel's generic power-domain debugfs cleanup allows local users to interrupt service through memory exhaustion. The genpd_debug_remove() path calls debugfs_lookup() for a power-domain entry and removes it without releasing the returned dentry reference with dput(). The affected path requires CONFIG_DEBUG_FS and power-domain removal; repeated invocations retain references until memory pressure disrupts service.

CVSS severity5.5
Medium
EPSS probability0.16%
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 the Linux kernel's generic power-domain debugfs cleanup allows local users to interrupt service through memory exhaustion. The genpd_debug_remove() path calls debugfs_lookup() for a power-domain entry and removes it without releasing the returned dentry reference with dput(). The affected path requires CONFIG_DEBUG_FS and power-domain removal; repeated invocations retain references until memory pressure disrupts service.

The record

CVE
CVE-2023-53202
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0b6200e1e9f53dabdc30d0f6c51af9a5f664d32b
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <543d7113c37206ed7dae7bfb0b7e50955077770e
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cde67cb7d2d1757baa83271c1f0892727e79f52e
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dddc132eb0dca3969f9146ef8feac0aa542aa305

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0b6200e1e9f53dabdc30d0f6c51af9a5f664d32b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <543d7113c37206ed7dae7bfb0b7e50955077770e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cde67cb7d2d1757baa83271c1f0892727e79f52e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dddc132eb0dca3969f9146ef8feac0aa542aa305

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5UbuntuCVSS: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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