CVE-2026-80705

Kernel crash via unchecked phantom-plane allocation

Published Aug 28, 2026 · Updated Aug 28, 2026

Null-pointer dereference in the AMD display DML2.1 code in Linux 6.11 allows attackers to crash the kernel during display validation. dml21_handle_phantom_streams_planes continues after dml21_add_phantom_plane fails to allocate a plane, leaving a null object for later use. Reachability requires the affected AMD display path and a phantom-plane allocation failure; the documented consequence is a kernel segfault.

CVSS severityUnavailable
Unscored
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 the AMD display DML2.1 code in Linux 6.11 allows attackers to crash the kernel during display validation. dml21_handle_phantom_streams_planes continues after dml21_add_phantom_plane fails to allocate a plane, leaving a null object for later use. Reachability requires the affected AMD display path and a phantom-plane allocation failure; the documented consequence is a kernel segfault.

The record

CVE
CVE-2026-80705
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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=6.11
  2. Affected versionversion=70839da6360500a82e4d5f78499284474cbed7c1 <000acb4ce7fb9feba3072ce468ad681f6585cd5d
  3. Affected versionversion=70839da6360500a82e4d5f78499284474cbed7c1 <062cfd6c678f6647c8841f684d6dadab08d95512

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=6.11; version=70839da6360500a82e4d5f78499284474cbed7c1 <000acb4ce7fb9feba3072ce468ad681f6585cd5d; version=70839da6360500a82e4d5f78499284474cbed7c1 <062cfd6c678f6647c8841f684d6dadab08d95512

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
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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