CVE-2024-36950

System freeze via unmasked FireWire reset interrupts

Published May 30, 2024 · Updated May 11, 2026

Denial of service in the Linux FireWire OHCI driver allows local users to freeze the system by triggering a bus reset. With debug bit 8 enabled, irq_handler leaves the reset event set and its interrupt unmasked, causing the handler to run repeatedly. Exploitation requires privileged module configuration and a FireWire OHCI controller; the reported consequence is a system hang.

CVSS severity4.4
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux FireWire OHCI driver allows local users to freeze the system by triggering a bus reset. With debug bit 8 enabled, irq_handler leaves the reset event set and its interrupt unmasked, causing the handler to run repeatedly. Exploitation requires privileged module configuration and a FireWire OHCI controller; the reported consequence is a system hang.

The record

CVE
CVE-2024-36950
Published
May 30, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
admin

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=2.6.26
  2. Affected versionversion=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <31279bbca40d2f40cb3bbb6d538ec9620a645dec
  3. Affected versionversion=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <4f9cc355c328fc4f41cbd9c4cd58b235184fa420
  4. Affected versionversion=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <5982887de60c1b84f9c0ca07c835814d07fd1da0
  5. Affected versionversion=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <6fafe3661712b143d9c69a7322294bd53f559d5d
  6. Affected versionversion=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <752e3c53de0fa3b7d817a83050b6699b8e9c6ec9
  7. Affected versionversion=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <8643332aac0576581cfdf01798ea3e4e0d624b61
  8. Affected versionversion=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <b3948c69d60279fce5b2eeda92a07d66296c8130
  9. Affected versionversion=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <fa273f312334246c909475c5868e6daab889cc8c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.26; version=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <31279bbca40d2f40cb3bbb6d538ec9620a645dec; version=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <4f9cc355c328fc4f41cbd9c4cd58b235184fa420; version=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <5982887de60c1b84f9c0ca07c835814d07fd1da0; version=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <6fafe3661712b143d9c69a7322294bd53f559d5d; version=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <752e3c53de0fa3b7d817a83050b6699b8e9c6ec9; version=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <8643332aac0576581cfdf01798ea3e4e0d624b61; version=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <b3948c69d60279fce5b2eeda92a07d66296c8130; version=a007bb857e0b26f5d8b73c2ff90782d9c0972620 <fa273f312334246c909475c5868e6daab889cc8c

Published CVSS scores

4.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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