CVE-2023-54202

Kernel memory corruption via raced i915 config removal

Published Dec 30, 2025 · Updated Dec 30, 2025

Use-after-free in affected Linux branches allows local users with i915 render-node access to corrupt kernel memory via concurrent ioctls. i915_perf_add_config_ioctl drops metrics_lock before its final oa_config dereference, allowing a concurrent remove ioctl on a guessed configuration ID to free the object first. Local users who can open the i915 render node can repeatedly race both ioctls, enabling kernel-level code execution or a system crash.

CVSS severity7.8
High
EPSS probability0.15%
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 affected Linux branches allows local users with i915 render-node access to corrupt kernel memory via concurrent ioctls. i915_perf_add_config_ioctl drops metrics_lock before its final oa_config dereference, allowing a concurrent remove ioctl on a guessed configuration ID to free the object first. Local users who can open the i915 render node can repeatedly race both ioctls, enabling kernel-level code execution or a system crash.

The record

CVE
CVE-2023-54202
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 2025Record 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=4.14
  2. Affected versionversion=f89823c212246d0671cc51e69894a3df1a743aee <240b1502708858b5e3f10b6dc5ca3f148a322fef
  3. Affected versionversion=f89823c212246d0671cc51e69894a3df1a743aee <6eeb1cba4c9dc47656ea328afa34953c28783d8c
  4. Affected versionversion=f89823c212246d0671cc51e69894a3df1a743aee <7eb98f5ac551863efe8be810cea1cd5411d677b1
  5. Affected versionversion=f89823c212246d0671cc51e69894a3df1a743aee <dc30c011469165d57af9adac5baff7d767d20e5c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.14; version=f89823c212246d0671cc51e69894a3df1a743aee <240b1502708858b5e3f10b6dc5ca3f148a322fef; version=f89823c212246d0671cc51e69894a3df1a743aee <6eeb1cba4c9dc47656ea328afa34953c28783d8c; version=f89823c212246d0671cc51e69894a3df1a743aee <7eb98f5ac551863efe8be810cea1cd5411d677b1; version=f89823c212246d0671cc51e69894a3df1a743aee <dc30c011469165d57af9adac5baff7d767d20e5c

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/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)
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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