CVE-2025-71081

Local denial of service via OF node leak

Published Jan 13, 2026 · Updated Jan 13, 2026

Memory leak in the Linux kernel's STM32 SAI ASoC driver allows local users to interrupt service through repeated probe failures. The platform probe retains the reference acquired for the sync-provider device-tree node when probing is deferred or otherwise fails, and driver unbind also omits the release. Reachability requires the STM32 SAI driver and a probe-failure or re-probe path; repeated failures exhaust memory, while DAI re-probing without rebinding creates a use-after-free condition.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the Linux kernel's STM32 SAI ASoC driver allows local users to interrupt service through repeated probe failures. The platform probe retains the reference acquired for the sync-provider device-tree node when probing is deferred or otherwise fails, and driver unbind also omits the release. Reachability requires the STM32 SAI driver and a probe-failure or re-probe path; repeated failures exhaust memory, while DAI re-probing without rebinding creates a use-after-free condition.

The record

CVE
CVE-2025-71081
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 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=4.15
  2. Affected versionversion=5914d285f6b782892a91d6621723fdc41a775b15 <23261f0de09427367e99f39f588e31e2856a690e
  3. Affected versionversion=5914d285f6b782892a91d6621723fdc41a775b15 <3752afcc6d80d5525e236e329895ba2cb93bcb26
  4. Affected versionversion=5914d285f6b782892a91d6621723fdc41a775b15 <4054a3597d047f3fe87864ef87f399b5d523e6c0
  5. Affected versionversion=5914d285f6b782892a91d6621723fdc41a775b15 <acda653169e180b1d860dbb6bc5aceb105858394
  6. Affected versionversion=5914d285f6b782892a91d6621723fdc41a775b15 <bae74771fc5d3b2a9cf6f5aa64596083d032c4a3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.15; version=5914d285f6b782892a91d6621723fdc41a775b15 <23261f0de09427367e99f39f588e31e2856a690e; version=5914d285f6b782892a91d6621723fdc41a775b15 <3752afcc6d80d5525e236e329895ba2cb93bcb26; version=5914d285f6b782892a91d6621723fdc41a775b15 <4054a3597d047f3fe87864ef87f399b5d523e6c0; version=5914d285f6b782892a91d6621723fdc41a775b15 <acda653169e180b1d860dbb6bc5aceb105858394; version=5914d285f6b782892a91d6621723fdc41a775b15 <bae74771fc5d3b2a9cf6f5aa64596083d032c4a3

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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