CVE-2026-97455Public exploitHinoki check available

Kernel memory corruption via dangling ACPICA return reference

Published Sep 24, 2026 · Updated Sep 24, 2026

Use-after-free in the Linux ACPICA interpreter before 6.12.111 and 6.18.53 allows attackers to corrupt kernel memory via crafted AML. Method teardown deletes local and argument nodes while return_desc can retain a RefOf pointer to those nodes, which AcpiNsResolveReferences later dereferences. Triggering requires an ACPI method to return an unresolved reference to its own local or argument; successful triggering causes a kernel crash or memory corruption.

CVSS severityUnavailable
Unscored
EPSS probability0.14%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Use-after-free in the Linux ACPICA interpreter before 6.12.111 and 6.18.53 allows attackers to corrupt kernel memory via crafted AML. Method teardown deletes local and argument nodes while return_desc can retain a RefOf pointer to those nodes, which AcpiNsResolveReferences later dereferences. Triggering requires an ACPI method to return an unresolved reference to its own local or argument; successful triggering causes a kernel crash or memory corruption.

The record

CVE
CVE-2026-97455
Published
Sep 24, 2026
Updated
Sep 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 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=0 <6.12.111
  2. Affected versionversion=0 <6.18.53
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <945e87267cfd90937b3c637f87324cbb56998b72
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ef5a8d939c1e5b36e75450bbb5b6348faff4dcf3
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fe7b3d3b7490c2c0119f2d84fa33996dcbc71042

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=0 <6.12.111; version=0 <6.18.53; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <945e87267cfd90937b3c637f87324cbb56998b72; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ef5a8d939c1e5b36e75450bbb5b6348faff4dcf3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fe7b3d3b7490c2c0119f2d84fa33996dcbc71042

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 exploitPublished

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

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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