CVE-2026-72145

Local denial of service via kernel-memory leak

Published Aug 15, 2026 · Updated Aug 15, 2026

Resource leakage in the Linux kernel TPMI driver 7.1 allows local users to exhaust kernel memory through repeated debugfs writes. The mem_write() error paths return without freeing the temporary array allocated by parse_int_array_user(), retaining kernel memory after each request. Repeated writes require local access to the TPMI debugfs control on supported Intel hardware and consume memory until system availability is impaired.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leakage in the Linux kernel TPMI driver 7.1 allows local users to exhaust kernel memory through repeated debugfs writes. The mem_write() error paths return without freeing the temporary array allocated by parse_int_array_user(), retaining kernel memory after each request. Repeated writes require local access to the TPMI debugfs control on supported Intel hardware and consume memory until system availability is impaired.

The record

CVE
CVE-2026-72145
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-772, T1499.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=7.1
  2. Affected versionversion=8e0a2fc68ec369f2b6755994da1d318d0898a9d9 <2137f21542900233a42bf00578817f9b8dfecadc
  3. Affected versionversion=8e0a2fc68ec369f2b6755994da1d318d0898a9d9 <a221557958e3a82d8565729d445a7385963f30b6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=7.1; version=8e0a2fc68ec369f2b6755994da1d318d0898a9d9 <2137f21542900233a42bf00578817f9b8dfecadc; version=8e0a2fc68ec369f2b6755994da1d318d0898a9d9 <a221557958e3a82d8565729d445a7385963f30b6

Published CVSS scores

4.4Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-772Missing Release of Resource after Effective Lifetime
T1499.001OS Exhaustion Flood

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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