CVE-2026-97525Hinoki check available

Unspecified impact via stale IOTLB entries

Published Sep 25, 2026 · Updated Sep 25, 2026

Incorrect page-table handling in Linux 6.18.8 through 6.18.52 and 6.19 allows attackers to cause unspecified impact via stale IOTLB entries. The x86 __split_large_page function allocates a PTE outside the standard kernel page-table API, so the table is neither constructed nor marked as a kernel table and is freed without IOTLB invalidation. The upstream patch does not document attacker reachability or whether the stale mappings expose data, corrupt memory, or interrupt service.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Incorrect page-table handling in Linux 6.18.8 through 6.18.52 and 6.19 allows attackers to cause unspecified impact via stale IOTLB entries. The x86 __split_large_page function allocates a PTE outside the standard kernel page-table API, so the table is neither constructed nor marked as a kernel table and is freed without IOTLB invalidation. The upstream patch does not document attacker reachability or whether the stale mappings expose data, corrupt memory, or interrupt service.

The record

CVE
CVE-2026-97525
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

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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=5ba2f0a1556479638ac11a3c201421f5515e89f5 <922873cf4fc34124215070a8ad391bf831538bb9
  2. Affected versionversion=5ba2f0a1556479638ac11a3c201421f5515e89f5 <9e4a3ec3411bb6bb59e3c1f29b75609f1e87aac4
  3. Affected versionversion=6.18.7 <6.18.53
  4. Affected versionversion=6.19
  5. Affected versionversion=b3039c526f3e1744db0cbb7ae1f0213f5e27d3f4 <84e0cd79d57f06b872154eb5d8f610584133f260

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=5ba2f0a1556479638ac11a3c201421f5515e89f5 <922873cf4fc34124215070a8ad391bf831538bb9; version=5ba2f0a1556479638ac11a3c201421f5515e89f5 <9e4a3ec3411bb6bb59e3c1f29b75609f1e87aac4; version=6.18.7 <6.18.53; version=6.19; version=b3039c526f3e1744db0cbb7ae1f0213f5e27d3f4 <84e0cd79d57f06b872154eb5d8f610584133f260

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

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Your stack

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