CVE-2024-42238

Local service interruption via oversized block header

Published Aug 7, 2024 · Updated May 11, 2026

Buffer overflow in the cs_dsp firmware loader in Linux allows local users to disrupt kernel availability through a malformed firmware file. The cs_dsp_power_up path lets cs_dsp_load and cs_dsp_load_coeff continue when a block header exceeds the bytes remaining instead of rejecting the file. Reaching the flaw requires local low-privilege access and a firmware load path using the Cirrus DSP driver; the exact failure mode is not publicly specified.

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

Buffer overflow in the cs_dsp firmware loader in Linux allows local users to disrupt kernel availability through a malformed firmware file. The cs_dsp_power_up path lets cs_dsp_load and cs_dsp_load_coeff continue when a block header exceeds the bytes remaining instead of rejecting the file. Reaching the flaw requires local low-privilege access and a firmware load path using the Cirrus DSP driver; the exact failure mode is not publicly specified.

The record

CVE
CVE-2024-42238
Published
Aug 7, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-120, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 7, 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=5.16
  2. Affected versionversion=f6bc909e7673c30abcbdb329e7d0aa2e83c103d7 <6eabd23383805725eff416c203688b7a390d4153
  3. Affected versionversion=f6bc909e7673c30abcbdb329e7d0aa2e83c103d7 <90ab191b7d181057d71234e8632e06b5844ac38e
  4. Affected versionversion=f6bc909e7673c30abcbdb329e7d0aa2e83c103d7 <959fe01e85b7241e3ec305d657febbe82da16a02
  5. Affected versionversion=f6bc909e7673c30abcbdb329e7d0aa2e83c103d7 <b8be70566b33abbd0180105070b4c67cfef8c44f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.16; version=f6bc909e7673c30abcbdb329e7d0aa2e83c103d7 <6eabd23383805725eff416c203688b7a390d4153; version=f6bc909e7673c30abcbdb329e7d0aa2e83c103d7 <90ab191b7d181057d71234e8632e06b5844ac38e; version=f6bc909e7673c30abcbdb329e7d0aa2e83c103d7 <959fe01e85b7241e3ec305d657febbe82da16a02; version=f6bc909e7673c30abcbdb329e7d0aa2e83c103d7 <b8be70566b33abbd0180105070b4c67cfef8c44f

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.

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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

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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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