CVE-2026-80779Hinoki check available

Kernel memory corruption via RX queue mispairing

Published Sep 4, 2026 · Updated Sep 4, 2026

Out-of-bounds access in the Linux kernel 6.9 ionic driver allows attackers to corrupt kernel memory through the XDP_TX path. The hardware-timestamp RX queue uses an index one past the regular txqcqs array, derives an invalid TX partner, and writes through that pointer. Reachability requires a dedicated hardware-timestamp RX queue on an ionic device and execution of XDP_TX for the unpaired queue.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Out-of-bounds access in the Linux kernel 6.9 ionic driver allows attackers to corrupt kernel memory through the XDP_TX path. The hardware-timestamp RX queue uses an index one past the regular txqcqs array, derives an invalid TX partner, and writes through that pointer. Reachability requires a dedicated hardware-timestamp RX queue on an ionic device and execution of XDP_TX for the unpaired queue.

The record

CVE
CVE-2026-80779
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?

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

  1. Affected versionversion=6.9
  2. Affected versionversion=8eeed8373e1cca836799bf8e4a05cffa8e444908 <39fc615e355b65b8d43be30da57aa95ae6eaf688
  3. Affected versionversion=8eeed8373e1cca836799bf8e4a05cffa8e444908 <881a805a8029ba48c0ce81c6674910f8d83f7afb
  4. Affected versionversion=8eeed8373e1cca836799bf8e4a05cffa8e444908 <d92255b405fb6f5acca408239ccd742e0a42c9cb
  5. Affected versionversion=8eeed8373e1cca836799bf8e4a05cffa8e444908 <ea081b4435515ac7177eb598a3c0678d1b9e7911
  6. Affected versionversion=8eeed8373e1cca836799bf8e4a05cffa8e444908 <f3868046e8e2e761d4d943a232bd109ff22a7d5b

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=6.9; version=8eeed8373e1cca836799bf8e4a05cffa8e444908 <39fc615e355b65b8d43be30da57aa95ae6eaf688; version=8eeed8373e1cca836799bf8e4a05cffa8e444908 <881a805a8029ba48c0ce81c6674910f8d83f7afb; version=8eeed8373e1cca836799bf8e4a05cffa8e444908 <d92255b405fb6f5acca408239ccd742e0a42c9cb; version=8eeed8373e1cca836799bf8e4a05cffa8e444908 <ea081b4435515ac7177eb598a3c0678d1b9e7911; version=8eeed8373e1cca836799bf8e4a05cffa8e444908 <f3868046e8e2e761d4d943a232bd109ff22a7d5b

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.

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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)
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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