CVE-2025-71191

Local service interruption via leaked device references

Published Jan 31, 2026 · Updated Jan 31, 2026

A device-reference leak in the Linux kernel at_hdmac driver allows local users to consume resources through successful DMA channel allocation. The of_dma_xlate() success path obtains a DMA platform-device reference, but channel-resource release omits the matching put_device() operation. Reachability requires a local low-privileged user and the affected driver; the record does not identify the resulting failure mode.

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

A device-reference leak in the Linux kernel at_hdmac driver allows local users to consume resources through successful DMA channel allocation. The of_dma_xlate() success path obtains a DMA platform-device reference, but channel-resource release omits the matching put_device() operation. Reachability requires a local low-privileged user and the affected driver; the record does not identify the resulting failure mode.

The record

CVE
CVE-2025-71191
Published
Jan 31, 2026
Updated
Jan 31, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
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=3.10
  2. Affected versionversion=bbe89c8e3d598129b728d1388c3ad9abe4e8e261 <6a86cf2c09e149d5718a5b7090545f7566da9334
  3. Affected versionversion=bbe89c8e3d598129b728d1388c3ad9abe4e8e261 <987c71671367f42460689b78244d7b894c50999a
  4. Affected versionversion=bbe89c8e3d598129b728d1388c3ad9abe4e8e261 <b9074b2d7a230b6e28caa23165e9d8bc0677d333
  5. Affected versionversion=bbe89c8e3d598129b728d1388c3ad9abe4e8e261 <f3c23b7e941349505c3d40de2cc0acd93d9ac057

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3.10; version=bbe89c8e3d598129b728d1388c3ad9abe4e8e261 <6a86cf2c09e149d5718a5b7090545f7566da9334; version=bbe89c8e3d598129b728d1388c3ad9abe4e8e261 <987c71671367f42460689b78244d7b894c50999a; version=bbe89c8e3d598129b728d1388c3ad9abe4e8e261 <b9074b2d7a230b6e28caa23165e9d8bc0677d333; version=bbe89c8e3d598129b728d1388c3ad9abe4e8e261 <f3c23b7e941349505c3d40de2cc0acd93d9ac057

Published CVSS scores

5.5NVDCVSS: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

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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