CVE-2026-89813

GPU service hang via stale KIQ fence sequence

Published Sep 16, 2026 · Updated Sep 16, 2026

Denial of service in Linux before 7.2.5 allows attackers to hang KIQ submissions after a MODE1 AMDGPU reset. The amdgpu_device_pre_asic_reset function skips the no-scheduler KIQ ring, leaving its GTT fence value stale while sync_seq advances, so the next submission polls forever for an unwritten sequence. Exploitation requires an AMD GPU to undergo the affected reset path before another KIQ submission, interrupting GPU command processing without a reported full-system crash.

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

Denial of service in Linux before 7.2.5 allows attackers to hang KIQ submissions after a MODE1 AMDGPU reset. The amdgpu_device_pre_asic_reset function skips the no-scheduler KIQ ring, leaving its GTT fence value stale while sync_seq advances, so the next submission polls forever for an unwritten sequence. Exploitation requires an AMD GPU to undergo the affected reset path before another KIQ submission, interrupting GPU command processing without a reported full-system crash.

The record

CVE
CVE-2026-89813
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
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 <7.2.5
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bdd6a58743e00ebc6d52b9cdf9aafb4e535e0b71
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fd65d1742992361fc2201ecb4e43411e6e417fcb

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=0 <7.2.5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bdd6a58743e00ebc6d52b9cdf9aafb4e535e0b71; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fd65d1742992361fc2201ecb4e43411e6e417fcb

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

No sourced classifications are available.

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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