CVE-2023-53571

Local kernel crash via NULL encoder dereference

Published Oct 4, 2025 · Updated Oct 4, 2025

A NULL-pointer dereference in Linux kernel i915 allows local users to crash affected kernels during an atomic display update. When intel_get_crtc_new_encoder() cannot find the CRTC connector in the atomic state, its warning path obtains the device through the NULL encoder instead of the valid state object. The path requires local low-privileged access and an i915 display configuration lacking that connector; the bounded result is a kernel oops and service interruption.

CVSS severity5.5
Medium
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

A NULL-pointer dereference in Linux kernel i915 allows local users to crash affected kernels during an atomic display update. When intel_get_crtc_new_encoder() cannot find the CRTC connector in the atomic state, its warning path obtains the device through the NULL encoder instead of the valid state object. The path requires local low-privileged access and an i915 display configuration lacking that connector; the bounded result is a kernel oops and service interruption.

The record

CVE
CVE-2023-53571
Published
Oct 4, 2025
Updated
Oct 4, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 4, 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=3a47ae201e074945bbde0b088e4c1215c07f4d75 <0fe6ef82e4f4764e8f556632e4cd93d78d448e99
  2. Affected versionversion=3a47ae201e074945bbde0b088e4c1215c07f4d75 <54202488c835dab8c648acd107f0bb8eaa699894
  3. Affected versionversion=3a47ae201e074945bbde0b088e4c1215c07f4d75 <631420b06597a33c72b6dcef78d1c2dea17f452d
  4. Affected versionversion=3a47ae201e074945bbde0b088e4c1215c07f4d75 <780f303233c35eeb5132e3ee1cbc8f4cebe86dd2
  5. Affected versionversion=3a47ae201e074945bbde0b088e4c1215c07f4d75 <8cd725315c559a8a4d18ac1d7fce1d6b9a667529
  6. Affected versionversion=3a47ae201e074945bbde0b088e4c1215c07f4d75 <fd8b0abecdf66379e9d25d7448b942b5be379cb2
  7. Affected versionversion=5.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3a47ae201e074945bbde0b088e4c1215c07f4d75 <0fe6ef82e4f4764e8f556632e4cd93d78d448e99; version=3a47ae201e074945bbde0b088e4c1215c07f4d75 <54202488c835dab8c648acd107f0bb8eaa699894; version=3a47ae201e074945bbde0b088e4c1215c07f4d75 <631420b06597a33c72b6dcef78d1c2dea17f452d; version=3a47ae201e074945bbde0b088e4c1215c07f4d75 <780f303233c35eeb5132e3ee1cbc8f4cebe86dd2; version=3a47ae201e074945bbde0b088e4c1215c07f4d75 <8cd725315c559a8a4d18ac1d7fce1d6b9a667529; version=3a47ae201e074945bbde0b088e4c1215c07f4d75 <fd8b0abecdf66379e9d25d7448b942b5be379cb2; version=5.7

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

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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