CVE-2023-52475Public exploit

Kernel crash via uncanceled asynchronous USB request

Published Feb 29, 2024 · Updated May 11, 2026

Use-after-free in the Linux PowerMate USB driver allows physically proximate attackers to crash the kernel by disconnecting a device. powermate_disconnect frees the powermate_device structure without canceling pm->config, so powermate_config_complete later locks freed memory. Reachability requires a connected PowerMate USB device and a pending asynchronous configuration request when the device is physically disconnected.

CVSS severity7.8
High
EPSS probability0.24%
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 PowerMate USB driver allows physically proximate attackers to crash the kernel by disconnecting a device. powermate_disconnect frees the powermate_device structure without canceling pm->config, so powermate_config_complete later locks freed memory. Reachability requires a connected PowerMate USB device and a pending asynchronous configuration request when the device is physically disconnected.

The record

CVE
CVE-2023-52475
Published
Feb 29, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1499
Attack vector
physical
Privileges
admin

Timeline

How it unfolded

  1. Feb 29, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2efe67c581a2a6122b328d4bb6f21b3f36f40d46
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5aa514100aaf59868d745196258269a16737c7bd
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5c15c60e7be615f05a45cd905093a54b11f461bc
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <67cace72606baf1758fd60feb358f4c6be92e1cc
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6a4a396386404e62fb59bc3bde48871a64a82b4f
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8677575c4f39d65bf0d719b5d20e8042e550ccb9
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cd2fbfd8b922b7fdd50732e47d797754ab59cb06
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e528b1b9d60743e0b26224e3fe7aa74c24b8b2f8
  9. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectorphysical
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2efe67c581a2a6122b328d4bb6f21b3f36f40d46; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5aa514100aaf59868d745196258269a16737c7bd; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5c15c60e7be615f05a45cd905093a54b11f461bc; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <67cace72606baf1758fd60feb358f4c6be92e1cc; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6a4a396386404e62fb59bc3bde48871a64a82b4f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8677575c4f39d65bf0d719b5d20e8042e550ccb9; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cd2fbfd8b922b7fdd50732e47d797754ab59cb06; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e528b1b9d60743e0b26224e3fe7aa74c24b8b2f8; version=2.6.12

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.1Oracle LinuxCVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-416Use After Free
T1499Endpoint Denial of Service

Public exploit references

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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