CVE-2023-53759

Local kernel code execution via hidraw refcount race

Published Dec 8, 2025 · Updated Aug 5, 2026

Race condition in affected Linux kernels allows local users with hidraw access to execute kernel code via concurrent device opens. The hidraw_open() function increments dev->open without exclusive synchronization, so simultaneous opens can lose a reference and a later device detach can free a still-referenced hidraw object. Read, poll, or release operations on the dangling object can disclose or overwrite kernel memory, hijack control flow, or crash the system; access to the same /dev/hidrawN node is required.

CVSS severity7.8
High
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

Race condition in affected Linux kernels allows local users with hidraw access to execute kernel code via concurrent device opens. The hidraw_open() function increments dev->open without exclusive synchronization, so simultaneous opens can lose a reference and a later device detach can free a still-referenced hidraw object. Read, poll, or release operations on the dangling object can disclose or overwrite kernel memory, hijack control flow, or crash the system; access to the same /dev/hidrawN node is required.

The record

CVE
CVE-2023-53759
Published
Dec 8, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.17
  2. Affected versionversion=8590222e4b021054a7167a4dd35b152a8ed7018e <05b47034e2488c2924e5c032e20a1979d012b5b5
  3. Affected versionversion=8590222e4b021054a7167a4dd35b152a8ed7018e <879e79c3aead41b8aa2e91164354b30bd1c4ef3b
  4. Affected versionversion=8590222e4b021054a7167a4dd35b152a8ed7018e <944ee77dc6ec7b0afd8ec70ffc418b238c92f12b
  5. Affected versionversion=8590222e4b021054a7167a4dd35b152a8ed7018e <ff348eabd97577da974d3db7038857f28c61d2bd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.17; version=8590222e4b021054a7167a4dd35b152a8ed7018e <05b47034e2488c2924e5c032e20a1979d012b5b5; version=8590222e4b021054a7167a4dd35b152a8ed7018e <879e79c3aead41b8aa2e91164354b30bd1c4ef3b; version=8590222e4b021054a7167a4dd35b152a8ed7018e <944ee77dc6ec7b0afd8ec70ffc418b238c92f12b; version=8590222e4b021054a7167a4dd35b152a8ed7018e <ff348eabd97577da974d3db7038857f28c61d2bd

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.1SUSECVSS: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

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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

T1068Exploitation for Privilege Escalation

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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