CVE-2025-39930

Kernel crash via premature device-node release

Published Apr 18, 2025 · Updated Aug 5, 2026

Use-after-free in Linux kernel ASoC simple-card-utils 6.14 allows local users to crash the kernel through driver operations. graph_util_parse_dai stores a device node in dlc->of_node, but __free(device_node) drops its reference when parsing returns while the driver continues using it. Reachability requires the ASoC audio-graph-card driver and local driver-model access; subsequent stale-pointer use can corrupt kernel memory.

CVSS severity8.4
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Linux kernel ASoC simple-card-utils 6.14 allows local users to crash the kernel through driver operations. graph_util_parse_dai stores a device node in dlc->of_node, but __free(device_node) drops its reference when parsing returns while the driver continues using it. Reachability requires the ASoC audio-graph-card driver and local driver-model access; subsequent stale-pointer use can corrupt kernel memory.

The record

CVE
CVE-2025-39930
Published
Apr 18, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=142a386a805809e21361976d566392bcd07870b8 <16a49e3fda339aa552cde7f2cdbb25b91426cb8a
  2. Affected versionversion=419d1918105e5d9926ab02f1f834bb416dc76f65 <232a32e8a7e9be8a2ee238df9b5304eed2f4e195
  3. Affected versionversion=419d1918105e5d9926ab02f1f834bb416dc76f65 <de74ec718e0788e1998eb7289ad07970e27cae27
  4. Affected versionversion=6.12.78 <6.12.82
  5. Affected versionversion=6.14
  6. Affected versionversion=6.6.130 <6.6.135
  7. Affected versionversion=e03f8d14191142849abad62307d4128afd304521 <146e25625378f7d4463acbd1ffbd975f3332a806

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=142a386a805809e21361976d566392bcd07870b8 <16a49e3fda339aa552cde7f2cdbb25b91426cb8a; version=419d1918105e5d9926ab02f1f834bb416dc76f65 <232a32e8a7e9be8a2ee238df9b5304eed2f4e195; version=419d1918105e5d9926ab02f1f834bb416dc76f65 <de74ec718e0788e1998eb7289ad07970e27cae27; version=6.12.78 <6.12.82; version=6.14; version=6.6.130 <6.6.135; version=e03f8d14191142849abad62307d4128afd304521 <146e25625378f7d4463acbd1ffbd975f3332a806

Published CVSS scores

5.5CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
8.4Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:N/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
PrivilegesUnavailable
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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