CVE-2026-64585

Kernel memory corruption via late URB teardown

Published Aug 6, 2026 · Updated Aug 6, 2026

Use-after-free in the Linux kernel esd_usb driver allows physically proximate attackers to corrupt memory during USB device teardown. esd_usb_disconnect() frees each CAN netdev before unlink_all_urbs() dereferences its embedded private data and writes to the freed allocation. Exploitation requires an attached ESD USB CAN device to reach the disconnect path; the published record does not establish code execution.

CVSS severity4.8
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

Use-after-free in the Linux kernel esd_usb driver allows physically proximate attackers to corrupt memory during USB device teardown. esd_usb_disconnect() frees each CAN netdev before unlink_all_urbs() dereferences its embedded private data and writes to the freed allocation. Exploitation requires an attached ESD USB CAN device to reach the disconnect path; the published record does not establish code execution.

The record

CVE
CVE-2026-64585
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
physical
Privileges
unauthenticated

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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.6.36
  2. Affected versionversion=96d8e90382dc336b5de401164597edfdc2e8d9f1 <5832c55b3c824ba2fe9c36ac3c411baddcce053e
  3. Affected versionversion=96d8e90382dc336b5de401164597edfdc2e8d9f1 <765ba1c91823a296447528791b89a6504947fd5c
  4. Affected versionversion=96d8e90382dc336b5de401164597edfdc2e8d9f1 <a02e1d8f191324583599544d54e59e6a2b74bb0e
  5. Affected versionversion=96d8e90382dc336b5de401164597edfdc2e8d9f1 <a3314f10369df70925140f59bbe069718f65a0b9
  6. Affected versionversion=96d8e90382dc336b5de401164597edfdc2e8d9f1 <aa1d005927db38af783c1a4a8a00a39e0229ab2d
  7. Affected versionversion=96d8e90382dc336b5de401164597edfdc2e8d9f1 <c43122fef328a70045fe7621c06de6b2b8e19264

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.36; version=96d8e90382dc336b5de401164597edfdc2e8d9f1 <5832c55b3c824ba2fe9c36ac3c411baddcce053e; version=96d8e90382dc336b5de401164597edfdc2e8d9f1 <765ba1c91823a296447528791b89a6504947fd5c; version=96d8e90382dc336b5de401164597edfdc2e8d9f1 <a02e1d8f191324583599544d54e59e6a2b74bb0e; version=96d8e90382dc336b5de401164597edfdc2e8d9f1 <a3314f10369df70925140f59bbe069718f65a0b9; version=96d8e90382dc336b5de401164597edfdc2e8d9f1 <aa1d005927db38af783c1a4a8a00a39e0229ab2d; version=96d8e90382dc336b5de401164597edfdc2e8d9f1 <c43122fef328a70045fe7621c06de6b2b8e19264

Published CVSS scores

4.8Amazon LinuxCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/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 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

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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