CVE-2024-39491

Local service interruption via uninitialized DSP reuse

Published Jul 10, 2024 · Updated May 11, 2026

Use of an uninitialized resource in the Linux cs35l56 HDA driver allows local users to interrupt service after driver rebinding. The cs35l56_hda_unbind() callback removes the cs_dsp instance even though it was initialized in probe(), so a later bind reuses an uninitialized instance. Triggering requires local access to a system using the CS35L56 HDA driver, and the published impact is limited to availability.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of an uninitialized resource in the Linux cs35l56 HDA driver allows local users to interrupt service after driver rebinding. The cs35l56_hda_unbind() callback removes the cs_dsp instance even though it was initialized in probe(), so a later bind reuses an uninitialized instance. Triggering requires local access to a system using the CS35L56 HDA driver, and the published impact is limited to availability.

The record

CVE
CVE-2024-39491
Published
Jul 10, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.6
  2. Affected versionversion=73cfbfa9caea8eda54b4c6e49a9555533660aa1e <60d5e087e5f334475b032ad7e6ad849fb998f303
  3. Affected versionversion=73cfbfa9caea8eda54b4c6e49a9555533660aa1e <9054c474f9c219e58a441e401c0e6e38fe713ff1
  4. Affected versionversion=73cfbfa9caea8eda54b4c6e49a9555533660aa1e <d344873c4cbde249b7152d36a273bcc45864001e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.6; version=73cfbfa9caea8eda54b4c6e49a9555533660aa1e <60d5e087e5f334475b032ad7e6ad849fb998f303; version=73cfbfa9caea8eda54b4c6e49a9555533660aa1e <9054c474f9c219e58a441e401c0e6e38fe713ff1; version=73cfbfa9caea8eda54b4c6e49a9555533660aa1e <d344873c4cbde249b7152d36a273bcc45864001e

Published CVSS scores

4.1Oracle LinuxCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
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-908Use of Uninitialized Resource
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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