CVE-2024-42274

System freeze via ALSA FireWire lock inversion

Published Aug 17, 2024 · Updated May 11, 2026

Improper locking in affected Linux kernel releases allows local users to freeze the system during ALSA use with an RME Fireface 800. Removing process-context workqueues from amdtp_domain_stream_pcm_pointer() and update_pcm_pointers() lets the status and period-elapse paths acquire the ALSA substream and tasklet locks in opposite orders. The condition requires local ALSA operation with the affected FireWire device; the resulting AB/BA deadlock leaves the system frozen.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in affected Linux kernel releases allows local users to freeze the system during ALSA use with an RME Fireface 800. Removing process-context workqueues from amdtp_domain_stream_pcm_pointer() and update_pcm_pointers() lets the status and period-elapse paths acquire the ALSA substream and tasklet locks in opposite orders. The condition requires local ALSA operation with the affected FireWire device; the resulting AB/BA deadlock leaves the system frozen.

The record

CVE
CVE-2024-42274
Published
Aug 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 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=5.14
  2. Affected versionversion=7ba5ca32fe6e8d2e153fb5602997336517b34743 <36c255db5a25edd42d1aca48e38b8e95ee5fd9ef
  3. Affected versionversion=7ba5ca32fe6e8d2e153fb5602997336517b34743 <3dab73ab925a51ab05543b491bf17463a48ca323
  4. Affected versionversion=7ba5ca32fe6e8d2e153fb5602997336517b34743 <7c07220cf634002f93a87ca2252a32766850f2d1
  5. Affected versionversion=7ba5ca32fe6e8d2e153fb5602997336517b34743 <b239a37d68e8bc59f9516444da222841e3b13ba9
  6. Affected versionversion=7ba5ca32fe6e8d2e153fb5602997336517b34743 <f5043e69aeb2786f32e84132817a007a6430aa7d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.14; version=7ba5ca32fe6e8d2e153fb5602997336517b34743 <36c255db5a25edd42d1aca48e38b8e95ee5fd9ef; version=7ba5ca32fe6e8d2e153fb5602997336517b34743 <3dab73ab925a51ab05543b491bf17463a48ca323; version=7ba5ca32fe6e8d2e153fb5602997336517b34743 <7c07220cf634002f93a87ca2252a32766850f2d1; version=7ba5ca32fe6e8d2e153fb5602997336517b34743 <b239a37d68e8bc59f9516444da222841e3b13ba9; version=7ba5ca32fe6e8d2e153fb5602997336517b34743 <f5043e69aeb2786f32e84132817a007a6430aa7d

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 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-667Improper Locking
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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