CVE-2026-64595

System crash via delayed HID work use-after-free

Published Aug 6, 2026 · Updated Aug 6, 2026

Use-after-free in Linux 7.1 through 7.1.3 allows local users to crash the system by rapidly unbinding the Lenovo Legion Go HID device. hid_go_cfg_remove() destroys the HID device without canceling go_cfg_setup, so cfg_setup() later dereferences the released drvdata.hdev pointer. Reachability requires a probe failure during rollback or administrative control sufficient to remove the driver within the two-millisecond window; successful exploitation crashes the system.

CVSS severity5.5
Medium
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

Use-after-free in Linux 7.1 through 7.1.3 allows local users to crash the system by rapidly unbinding the Lenovo Legion Go HID device. hid_go_cfg_remove() destroys the HID device without canceling go_cfg_setup, so cfg_setup() later dereferences the released drvdata.hdev pointer. Reachability requires a probe failure during rollback or administrative control sufficient to remove the driver within the two-millisecond window; successful exploitation crashes the system.

The record

CVE
CVE-2026-64595
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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=d69ccfcbc9551988190895bc125a8bf709aa5931 <3e7761f7bf9f0187bb18cf52b5119bdf4940e686
  3. Affected versionversion=d69ccfcbc9551988190895bc125a8bf709aa5931 <73fde0cbff7d9d618591774a12c23434232752c1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=7.1; version=d69ccfcbc9551988190895bc125a8bf709aa5931 <3e7761f7bf9f0187bb18cf52b5119bdf4940e686; version=d69ccfcbc9551988190895bc125a8bf709aa5931 <73fde0cbff7d9d618591774a12c23434232752c1

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.1Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:H/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application 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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