CVE-2026-89808

GPU migration failure via uninitialized status

Published Sep 16, 2026 · Updated Sep 16, 2026

Resource-management flaw in Linux allows local users to disrupt AMD GPU shared virtual memory migration through a CPU-side range hole. When svm_migrate_copy_to_vram encounters that hole, it allocates device pages without DMA-mapping source pages and leaves r uninitialized when j is zero. The flaw requires an AMD KFD shared-virtual-memory migration; the erroneous cleanup path discards the VRAM allocation created for that migration.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource-management flaw in Linux allows local users to disrupt AMD GPU shared virtual memory migration through a CPU-side range hole. When svm_migrate_copy_to_vram encounters that hole, it allocates device pages without DMA-mapping source pages and leaves r uninitialized when j is zero. The flaw requires an AMD KFD shared-virtual-memory migration; the erroneous cleanup path discards the VRAM allocation created for that migration.

The record

CVE
CVE-2026-89808
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=0 <6.18.51
  2. Affected versionversion=0 <7.2.5
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0a9a0e8a97da70a0336c9115178aaf1be29bcfb1
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <520e345ffe05aabef1db82beda4288afb1757ff2
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ae806a95b28fcecb913430cfa45a252e91a945d6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=0 <6.18.51; version=0 <7.2.5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0a9a0e8a97da70a0336c9115178aaf1be29bcfb1; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <520e345ffe05aabef1db82beda4288afb1757ff2; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ae806a95b28fcecb913430cfa45a252e91a945d6

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

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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