CVE-2026-98002Hinoki check available

Invalid nested-domain setup via sign-discarded allocation error

Published Sep 25, 2026 · Updated Sep 25, 2026

Improper error handling in Linux 7.0 allows attackers to create a nested AMD IOMMU domain with an unallocated host domain ID. amd_iommu_alloc_domain_nested stores the signed result of amd_iommu_pdom_id_alloc in a u32 before checking for failure, converting a negative errno into a large positive identifier. Triggering requires domain-ID exhaustion or memory pressure during nested-domain allocation; no further security consequence is published.

CVSS severityUnavailable
Unscored
EPSS probability0.11%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

Improper error handling in Linux 7.0 allows attackers to create a nested AMD IOMMU domain with an unallocated host domain ID. amd_iommu_alloc_domain_nested stores the signed result of amd_iommu_pdom_id_alloc in a u32 before checking for failure, converting a negative errno into a large positive identifier. Triggering requires domain-ID exhaustion or memory pressure during nested-domain allocation; no further security consequence is published.

The record

CVE
CVE-2026-98002
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.0
  2. Affected versionversion=757d2b1fdf5b7d6eead5963a49b5780617987ab8 <80c231f5577229d1e90a1e312b3095f9502f8625
  3. Affected versionversion=757d2b1fdf5b7d6eead5963a49b5780617987ab8 <fa5c0827f0b7bac6d0a188f10118151769ae68fd

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=7.0; version=757d2b1fdf5b7d6eead5963a49b5780617987ab8 <80c231f5577229d1e90a1e312b3095f9502f8625; version=757d2b1fdf5b7d6eead5963a49b5780617987ab8 <fa5c0827f0b7bac6d0a188f10118151769ae68fd

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started