CVE-2026-80884Hinoki check available

Unspecified impact via modified DMA handle

Published Sep 4, 2026 · Updated Sep 4, 2026

Improper DMA-handle management in Linux 4.20 through 7.1.4 allows attackers to cause unspecified impact in the NTB transport. drivers/ntb/ntb_transport.c aligned the DMA address for a memory window, stored only that adjusted value, and later passed it to dma_free_attrs instead of the allocation function's original handle. The affected path requires an NTB device and an allocation whose DMA address needs alignment; the Linux CVE record does not state the resulting operational consequence.

CVSS severityUnavailable
Unscored
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper DMA-handle management in Linux 4.20 through 7.1.4 allows attackers to cause unspecified impact in the NTB transport. drivers/ntb/ntb_transport.c aligned the DMA address for a memory window, stored only that adjusted value, and later passed it to dma_free_attrs instead of the allocation function's original handle. The affected path requires an NTB device and an allocation whose DMA address needs alignment; the Linux CVE record does not state the resulting operational consequence.

The record

CVE
CVE-2026-80884
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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?

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  1. Affected versionversion=4.20
  2. Affected versionversion=fc5d1829f9bf3d8275322727c0e9a8baf268b7c6 <10662aafce4acd52278c942d0a5b3993594017b9
  3. Affected versionversion=fc5d1829f9bf3d8275322727c0e9a8baf268b7c6 <da6d997ac556479c112554ab5d95cbd04683eb11

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=4.20; version=fc5d1829f9bf3d8275322727c0e9a8baf268b7c6 <10662aafce4acd52278c942d0a5b3993594017b9; version=fc5d1829f9bf3d8275322727c0e9a8baf268b7c6 <da6d997ac556479c112554ab5d95cbd04683eb11

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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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

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Your stack

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