CVE-2023-53625

Kernel crash via stale debugfs root removal

Published Oct 7, 2025 · Updated Oct 7, 2025

A null pointer dereference in Linux kernel i915 GVT allows local users to crash the kernel during mediated vGPU removal. intel_gvt_debugfs_remove_vgpu calls debugfs removal after the DRM minor's debugfs root has already been destroyed, dereferencing an unavailable root. Reaching the fault requires low-privileged local access and an Intel GVT-g mediated vGPU teardown; the reported result is a kernel oops and host service interruption.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A null pointer dereference in Linux kernel i915 GVT allows local users to crash the kernel during mediated vGPU removal. intel_gvt_debugfs_remove_vgpu calls debugfs removal after the DRM minor's debugfs root has already been destroyed, dereferencing an unavailable root. Reaching the fault requires low-privileged local access and an Intel GVT-g mediated vGPU teardown; the reported result is a kernel oops and host service interruption.

The record

CVE
CVE-2023-53625
Published
Oct 7, 2025
Updated
Oct 7, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 2025Record 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=4.16
  2. Affected versionversion=bc7b0be316aebac42eb9e8e54c984609555944da <44c0e07e3972e3f2609d69ad873d4f342f8a68ec
  3. Affected versionversion=bc7b0be316aebac42eb9e8e54c984609555944da <704f3384f322b40ba24d958473edfb1c9750c8fd
  4. Affected versionversion=bc7b0be316aebac42eb9e8e54c984609555944da <af90f8b36d78544433a48a3eda6a5faeafacd0a1
  5. Affected versionversion=bc7b0be316aebac42eb9e8e54c984609555944da <f5a9bbf962e2c4b1d9addbfaf16d7ffcc2f63bde
  6. Affected versionversion=bc7b0be316aebac42eb9e8e54c984609555944da <ffa83fba2a2ce8010eb106c779378cb3013362c7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.16; version=bc7b0be316aebac42eb9e8e54c984609555944da <44c0e07e3972e3f2609d69ad873d4f342f8a68ec; version=bc7b0be316aebac42eb9e8e54c984609555944da <704f3384f322b40ba24d958473edfb1c9750c8fd; version=bc7b0be316aebac42eb9e8e54c984609555944da <af90f8b36d78544433a48a3eda6a5faeafacd0a1; version=bc7b0be316aebac42eb9e8e54c984609555944da <f5a9bbf962e2c4b1d9addbfaf16d7ffcc2f63bde; version=bc7b0be316aebac42eb9e8e54c984609555944da <ffa83fba2a2ce8010eb106c779378cb3013362c7

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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 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

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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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