CVE-2026-64427

System crash via zero-field HID report dereference

Published Jul 25, 2026 · Updated Jul 25, 2026

NULL pointer dereference in Linux Kernel 7.1 through 7.1.3 allows physically proximate attackers to crash systems via a crafted HID descriptor. The Logitech DJ probe's short-report error path reads rep->field[0]->report_count after hid-core discards padding fields and leaves maxfield at zero. Triggering requires kernel probing of a receiver or UHID emulation that supplies the padding-only report; the resulting fault crashes the host.

CVSS severity4.6
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux Kernel 7.1 through 7.1.3 allows physically proximate attackers to crash systems via a crafted HID descriptor. The Logitech DJ probe's short-report error path reads rep->field[0]->report_count after hid-core discards padding fields and leaves maxfield at zero. Triggering requires kernel probing of a receiver or UHID emulation that supplies the padding-only report; the resulting fault crashes the host.

The record

CVE
CVE-2026-64427
Published
Jul 25, 2026
Updated
Jul 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499.004
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 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=7.1
  2. Affected versionversion=b6a57912854e7ea36f3b270032661140cc4209cd <590cc4d782487632a52f37c2171bee1eeea29627
  3. Affected versionversion=b6a57912854e7ea36f3b270032661140cc4209cd <7a89ad762fad53d56b7002d7ffc923a4b7f4006f

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=7.1; version=b6a57912854e7ea36f3b270032661140cc4209cd <590cc4d782487632a52f37c2171bee1eeea29627; version=b6a57912854e7ea36f3b270032661140cc4209cd <7a89ad762fad53d56b7002d7ffc923a4b7f4006f

Published CVSS scores

4.6Amazon LinuxCVSS:3.1/AV:P/AC:L/PR:N/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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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