CVE-2024-36955

Local disclosure and service interruption via reference leak

Published May 30, 2024 · Updated May 11, 2026

Reference leak in Linux kernel ALSA intel-sdw-acpi allows local users to disclose data and interrupt service via the audio-driver path. In sound/hda/intel-sdw-acpi.c, code calls device_get_named_child_node() without the required fwnode_handle_put(), retaining the returned node reference. Local access without privileges is sufficient according to CISA, but kernel.org does not publish the trigger, exposed data, or exact interruption mode.

CVSS severity7.7
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reference leak in Linux kernel ALSA intel-sdw-acpi allows local users to disclose data and interrupt service via the audio-driver path. In sound/hda/intel-sdw-acpi.c, code calls device_get_named_child_node() without the required fwnode_handle_put(), retaining the returned node reference. Local access without privileges is sufficient according to CISA, but kernel.org does not publish the trigger, exposed data, or exact interruption mode.

The record

CVE
CVE-2024-36955
Published
May 30, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-200
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 30, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=08c2a4bc9f2acaefbd0158866db5cb3238a68674 <722d33c442e66e4aabd3e778958d696ff3a2777e
  2. Affected versionversion=08c2a4bc9f2acaefbd0158866db5cb3238a68674 <7db626d2730d3d80fd31638169054b1e507f07bf
  3. Affected versionversion=08c2a4bc9f2acaefbd0158866db5cb3238a68674 <7ef6ecf98ce309b1f4e5a25cddd5965d01feea07
  4. Affected versionversion=08c2a4bc9f2acaefbd0158866db5cb3238a68674 <bd2d9641a39e6b5244230c4b41c4aca83b54b377
  5. Affected versionversion=08c2a4bc9f2acaefbd0158866db5cb3238a68674 <c158cf914713efc3bcdc25680c7156c48c12ef6a
  6. Affected versionversion=5.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=08c2a4bc9f2acaefbd0158866db5cb3238a68674 <722d33c442e66e4aabd3e778958d696ff3a2777e; version=08c2a4bc9f2acaefbd0158866db5cb3238a68674 <7db626d2730d3d80fd31638169054b1e507f07bf; version=08c2a4bc9f2acaefbd0158866db5cb3238a68674 <7ef6ecf98ce309b1f4e5a25cddd5965d01feea07; version=08c2a4bc9f2acaefbd0158866db5cb3238a68674 <bd2d9641a39e6b5244230c4b41c4aca83b54b377; version=08c2a4bc9f2acaefbd0158866db5cb3238a68674 <c158cf914713efc3bcdc25680c7156c48c12ef6a; version=5.12
The Linux Kernel Organization · Linux Kernelversion=08c2a4bc9f2a <722d33c442e6; version=08c2a4bc9f2a <7db626d2730d; version=08c2a4bc9f2a <7ef6ecf98ce3; version=08c2a4bc9f2a <bd2d9641a39e; version=08c2a4bc9f2a <c158cf914713; version=5.12

Published CVSS scores

7.7CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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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