CVE-2024-38551

Local kernel crash via missing codec DAI

Published Jun 19, 2024 · Updated May 11, 2026

NULL pointer dereference in the MediaTek ASoC sound-card driver in Linux allows local users to crash the kernel during device probe. The probe path compares a missing codec DAI name as a string instead of assigning the dummy codec, dereferencing NULL. Exposure requires an affected MediaTek sound-card configuration with a DAI link that has no real codec; the consequence is limited to service interruption.

CVSS severity5.5
Medium
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

NULL pointer dereference in the MediaTek ASoC sound-card driver in Linux allows local users to crash the kernel during device probe. The probe path compares a missing codec DAI name as a string instead of assigning the dummy codec, dereferencing NULL. Exposure requires an affected MediaTek sound-card configuration with a DAI link that has no real codec; the consequence is limited to service interruption.

The record

CVE
CVE-2024-38551
Published
Jun 19, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 19, 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=4302187d955f166c03b4fa7c993b89ffbabfca4e <0c052b1c11d8119f3048b1f7b3c39a90500cacf9
  2. Affected versionversion=4302187d955f166c03b4fa7c993b89ffbabfca4e <5f39231888c63f0a7708abc86b51b847476379d8
  3. Affected versionversion=4302187d955f166c03b4fa7c993b89ffbabfca4e <87b8dca6e06f9b1681bc52bf7bfa85c663a11158
  4. Affected versionversion=4302187d955f166c03b4fa7c993b89ffbabfca4e <cbbcabc7f0979f6542372cf88d7a9da7143a4226
  5. Affected versionversion=6.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4302187d955f166c03b4fa7c993b89ffbabfca4e <0c052b1c11d8119f3048b1f7b3c39a90500cacf9; version=4302187d955f166c03b4fa7c993b89ffbabfca4e <5f39231888c63f0a7708abc86b51b847476379d8; version=4302187d955f166c03b4fa7c993b89ffbabfca4e <87b8dca6e06f9b1681bc52bf7bfa85c663a11158; version=4302187d955f166c03b4fa7c993b89ffbabfca4e <cbbcabc7f0979f6542372cf88d7a9da7143a4226; version=6.3

Published CVSS scores

5.5UbuntuCVSS: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-476NULL Pointer Dereference

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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