CVE-2025-39696

Local kernel crash via misreferenced private pointer

Published Sep 5, 2025 · Updated Sep 5, 2025

Memory corruption in the TAS2781 HDA codec driver in Linux 6.16 through 6.16.3 allows local users to crash the system. The calibration-loading path treats h->hda_priv as tasdevice_priv instead of using h->priv, so later accesses operate on the wrong object. Low-privileged access is sufficient, but exposure requires an affected kernel with the TAS2781 HDA codec driver in use.

CVSS severity7.8
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in the TAS2781 HDA codec driver in Linux 6.16 through 6.16.3 allows local users to crash the system. The calibration-loading path treats h->hda_priv as tasdevice_priv instead of using h->priv, so later accesses operate on the wrong object. Low-privileged access is sufficient, but exposure requires an affected kernel with the TAS2781 HDA codec driver in use.

The record

CVE
CVE-2025-39696
Published
Sep 5, 2025
Updated
Sep 5, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 5, 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=4fe238513407d83f38bf5782e8bcdd7b8baeb85d <2812815aa79637d39d4398ecd7e58f65d1c79231
  2. Affected versionversion=4fe238513407d83f38bf5782e8bcdd7b8baeb85d <3f4422e7c9436abf81a00270be7e4d6d3760ec0e
  3. Affected versionversion=6.16

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4fe238513407d83f38bf5782e8bcdd7b8baeb85d <2812815aa79637d39d4398ecd7e58f65d1c79231; version=4fe238513407d83f38bf5782e8bcdd7b8baeb85d <3f4422e7c9436abf81a00270be7e4d6d3760ec0e; version=6.16

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

T1499.004Application 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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