CVE-2026-68272

System crash via zero-length CP_GFX_SHADOW chunk

Published Aug 10, 2026 · Updated Aug 10, 2026

NULL-pointer dereference in Linux kernel 6.5 and later allows local users in the render group to crash AMD GPU systems via a crafted chunk. amdgpu_cs_pass1() accepts a zero-length CP_GFX_SHADOW chunk, after which amdgpu_cs_p2_shadow() treats ZERO_SIZE_PTR as struct data and reads shadow->flags. An unprivileged render-group process can trigger a kernel fault and system crash; systems without AMD GPUs are not affected.

CVSS severity5.5
Medium
EPSS probability0.18%
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 6.5 and later allows local users in the render group to crash AMD GPU systems via a crafted chunk. amdgpu_cs_pass1() accepts a zero-length CP_GFX_SHADOW chunk, after which amdgpu_cs_p2_shadow() treats ZERO_SIZE_PTR as struct data and reads shadow->flags. An unprivileged render-group process can trigger a kernel fault and system crash; systems without AMD GPUs are not affected.

The record

CVE
CVE-2026-68272
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=6.5
  2. Affected versionversion=ac9287055ff16a092416c76a19006764e4c6a978 <24668ca3ec19434d7a9574bf9112f2b0614c3a4e
  3. Affected versionversion=ac9287055ff16a092416c76a19006764e4c6a978 <2aa9ea2bd5146d237c8cc16d8737d878b0298a94
  4. Affected versionversion=ac9287055ff16a092416c76a19006764e4c6a978 <315d2e5741a81b0be763e80413a2677e22b7e596
  5. Affected versionversion=ac9287055ff16a092416c76a19006764e4c6a978 <3f190956404da55560056ce20606010e18bc059c
  6. Affected versionversion=ac9287055ff16a092416c76a19006764e4c6a978 <84c4c36acd5c4b2558b5069f869a165b2c655c84

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.5; version=ac9287055ff16a092416c76a19006764e4c6a978 <24668ca3ec19434d7a9574bf9112f2b0614c3a4e; version=ac9287055ff16a092416c76a19006764e4c6a978 <2aa9ea2bd5146d237c8cc16d8737d878b0298a94; version=ac9287055ff16a092416c76a19006764e4c6a978 <315d2e5741a81b0be763e80413a2677e22b7e596; version=ac9287055ff16a092416c76a19006764e4c6a978 <3f190956404da55560056ce20606010e18bc059c; version=ac9287055ff16a092416c76a19006764e4c6a978 <84c4c36acd5c4b2558b5069f869a165b2c655c84

Published CVSS scores

5.5Red HatCVSS: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
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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