CVE-2025-71188

Local service interruption via DMA route reference leak

Published Jan 31, 2026 · Updated Jan 31, 2026

Resource leak in the lpc18xx DMA mux driver in affected Linux Kernel releases allows local users to exhaust memory through route allocation. lpc18xx_dmamux_reserve calls of_find_device_by_node, which acquires a platform-device reference, but vulnerable paths return without a matching put_device call. Exploitation requires local low-privilege access and an active NXP LPC18xx/43xx DMA mux path; repeated allocations can interrupt service by exhausting kernel memory.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in the lpc18xx DMA mux driver in affected Linux Kernel releases allows local users to exhaust memory through route allocation. lpc18xx_dmamux_reserve calls of_find_device_by_node, which acquires a platform-device reference, but vulnerable paths return without a matching put_device call. Exploitation requires local low-privilege access and an active NXP LPC18xx/43xx DMA mux path; repeated allocations can interrupt service by exhausting kernel memory.

The record

CVE
CVE-2025-71188
Published
Jan 31, 2026
Updated
Jan 31, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 31, 2026Record 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=4.3
  2. Affected versionversion=e5f4ae84be7421010780984bdc121eac15997327 <1e47d80f6720f0224efd19bcf081d39637569c10
  3. Affected versionversion=e5f4ae84be7421010780984bdc121eac15997327 <992eb8055a6e5dbb808672d20d68e60d5a89b12b
  4. Affected versionversion=e5f4ae84be7421010780984bdc121eac15997327 <9fba97baa520c9446df51a64708daf27c5a7ed32
  5. Affected versionversion=e5f4ae84be7421010780984bdc121eac15997327 <d4d63059dee7e7cae0c4d9a532ed558bc90efb55

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.3; version=e5f4ae84be7421010780984bdc121eac15997327 <1e47d80f6720f0224efd19bcf081d39637569c10; version=e5f4ae84be7421010780984bdc121eac15997327 <992eb8055a6e5dbb808672d20d68e60d5a89b12b; version=e5f4ae84be7421010780984bdc121eac15997327 <9fba97baa520c9446df51a64708daf27c5a7ed32; version=e5f4ae84be7421010780984bdc121eac15997327 <d4d63059dee7e7cae0c4d9a532ed558bc90efb55

Published CVSS scores

5.5NIST NVDCVSS: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
T1499Endpoint Denial of Service

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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