CVE-2023-52695

Kernel crash via unchecked writeback connector type

Published May 17, 2024 · Updated May 11, 2026

NULL pointer dereference in Linux 6.7 through 6.7.1 allows local users to crash the kernel through an AMD display writeback connector. create_validate_stream_for_sink fails to branch on the connector type before validation uses AMD-specific connector state that writeback connectors do not provide. A low-privileged local user must reach the AMD display writeback path; the documented consequence is an availability-only kernel crash.

CVSS severity5.5
Medium
EPSS probability0.19%
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 6.7 through 6.7.1 allows local users to crash the kernel through an AMD display writeback connector. create_validate_stream_for_sink fails to branch on the connector type before validation uses AMD-specific connector state that writeback connectors do not provide. A low-privileged local user must reach the AMD display writeback path; the documented consequence is an availability-only kernel crash.

The record

CVE
CVE-2023-52695
Published
May 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 17, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=60e034f28600399705d79d4629dddcc301076e54 <0fe85301b95077ac4fa4a91909d38b7341e81187
  2. Affected versionversion=60e034f28600399705d79d4629dddcc301076e54 <dbf5d3d02987faa0eec3710dd687cd912362d7b5
  3. Affected versionversion=6.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=60e034f28600399705d79d4629dddcc301076e54 <0fe85301b95077ac4fa4a91909d38b7341e81187; version=60e034f28600399705d79d4629dddcc301076e54 <dbf5d3d02987faa0eec3710dd687cd912362d7b5; version=6.7

Published CVSS scores

5.5CanonicalCVSS: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 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

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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