CVE-2026-80593

Out-of-bounds read via empty ACPI subpackage

Published Aug 28, 2026 · Updated Aug 28, 2026

Out-of-bounds read in the asus_atk0110 hardware-monitor driver in Linux allows attackers to read past an allocation via malformed ACPI firmware. atk_ec_present() dereferences the first element of every GGRP-returned subpackage without first verifying that package.count is nonzero. Triggering the flaw requires a system whose GGRP ACPI method returns an empty subpackage; the published record does not establish data disclosure or a crash.

CVSS severityUnavailable
Unscored
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the asus_atk0110 hardware-monitor driver in Linux allows attackers to read past an allocation via malformed ACPI firmware. atk_ec_present() dereferences the first element of every GGRP-returned subpackage without first verifying that package.count is nonzero. Triggering the flaw requires a system whose GGRP ACPI method returns an empty subpackage; the published record does not establish data disclosure or a crash.

The record

CVE
CVE-2026-80593
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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=2.6.32
  2. Affected versionversion=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <2a137124664aad1e36d8d74e8e2207365a04737f
  3. Affected versionversion=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <459b0a0439ea65b2b612aa572eb62a2e26d05618
  4. Affected versionversion=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <76392d35c8df471b288cfc6536bd092b3c8ee2cf
  5. Affected versionversion=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <768f20e7bb48d723b82cb142120263d0806fbeb8
  6. Affected versionversion=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <981a8a2e3773dc7e704943388a1fb97970b23275
  7. Affected versionversion=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <b770fcfcdced569bcf7c6982aeea8c3d11a21c2b
  8. Affected versionversion=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <d8d4fa0c4f818e30b6f6737bdd989b7e2b511cae
  9. Affected versionversion=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <e2735b39f044bad7bf2017aef248935525bc0b97

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.32; version=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <2a137124664aad1e36d8d74e8e2207365a04737f; version=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <459b0a0439ea65b2b612aa572eb62a2e26d05618; version=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <76392d35c8df471b288cfc6536bd092b3c8ee2cf; version=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <768f20e7bb48d723b82cb142120263d0806fbeb8; version=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <981a8a2e3773dc7e704943388a1fb97970b23275; version=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <b770fcfcdced569bcf7c6982aeea8c3d11a21c2b; version=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <d8d4fa0c4f818e30b6f6737bdd989b7e2b511cae; version=9e6eba610c2eb68b05841a15ece1cf929c44aea3 <e2735b39f044bad7bf2017aef248935525bc0b97

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

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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)
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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