CVE-2024-35957

IOMMU probe failure via duplicate source IDs

Published May 20, 2024 · Updated May 11, 2026

Reachable assertion in Linux 6.8.2 through 6.8.6 allows attackers to cause Intel VT-d IOMMU device probing to fail. intel_iommu_probe_device inserts every probed device into a source-ID-indexed red-black tree and incorrectly assumes each source ID is unique, causing a WARN_ON when IDs collide. The failure occurs on platforms containing duplicate source IDs and produces a kernel warning followed by unsuccessful IOMMU probing.

CVSS severity5.9
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable assertion in Linux 6.8.2 through 6.8.6 allows attackers to cause Intel VT-d IOMMU device probing to fail. intel_iommu_probe_device inserts every probed device into a source-ID-indexed red-black tree and incorrectly assumes each source ID is unique, causing a WARN_ON when IDs collide. The failure occurs on platforms containing duplicate source IDs and produces a kernel warning followed by unsuccessful IOMMU probing.

The record

CVE
CVE-2024-35957
Published
May 20, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-617
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 20, 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=1a75cc710b956010137b4fe1d1fa3282bfd8f86c <89436f4f54125b1297aec1f466efd8acb4ec613d
  2. Affected versionversion=6.8.2 <6.8.7
  3. Affected versionversion=c618d446f1d64bdc9e426bab5e8619f224cde2ae <fba8ca3e6f608b92e54271fdbd3ce569361939fc

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1a75cc710b956010137b4fe1d1fa3282bfd8f86c <89436f4f54125b1297aec1f466efd8acb4ec613d; version=6.8.2 <6.8.7; version=c618d446f1d64bdc9e426bab5e8619f224cde2ae <fba8ca3e6f608b92e54271fdbd3ce569361939fc

Published CVSS scores

5.9CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-617Reachable Assertion

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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