CVE-2023-53678

Host crash via uninitialized fbdev suspension

Published Oct 7, 2025 · Updated Oct 7, 2025

NULL pointer dereference in Linux kernel 6.1 through 6.1.17 and 6.2 through 6.2.4 allows local users to crash displayless systems during suspend. The i915 suspend path calls intel_fbdev_set_suspend when fbdev was never initialized, causing mutex_lock to dereference an invalid pointer. Reachability requires the i915 driver, an uninitialized display path, and the ability to initiate system suspend; the bounded consequence is a kernel oops and host interruption.

CVSS severity5.5
Medium
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

NULL pointer dereference in Linux kernel 6.1 through 6.1.17 and 6.2 through 6.2.4 allows local users to crash displayless systems during suspend. The i915 suspend path calls intel_fbdev_set_suspend when fbdev was never initialized, causing mutex_lock to dereference an invalid pointer. Reachability requires the i915 driver, an uninitialized display path, and the ability to initiate system suspend; the bounded consequence is a kernel oops and host interruption.

The record

CVE
CVE-2023-53678
Published
Oct 7, 2025
Updated
Oct 7, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1529
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

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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=6.1
  2. Affected versionversion=f8cc091e05305231c8f747ca253a90ff0cea60b9 <27b5871abd5cc068c549fd23062c82e257fc0b9c
  3. Affected versionversion=f8cc091e05305231c8f747ca253a90ff0cea60b9 <8038510b1fe443ffbc0e356db5f47cbb8678a594
  4. Affected versionversion=f8cc091e05305231c8f747ca253a90ff0cea60b9 <8ed572d5a0f1509e691a75a0e3d3588050371f1e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.1; version=f8cc091e05305231c8f747ca253a90ff0cea60b9 <27b5871abd5cc068c549fd23062c82e257fc0b9c; version=f8cc091e05305231c8f747ca253a90ff0cea60b9 <8038510b1fe443ffbc0e356db5f47cbb8678a594; version=f8cc091e05305231c8f747ca253a90ff0cea60b9 <8ed572d5a0f1509e691a75a0e3d3588050371f1e

Published CVSS scores

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
T1529System Shutdown/Reboot

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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