CVE-2026-80919

Service hang via recursive AMDGPU reservation locking

Published Sep 9, 2026 · Updated Sep 9, 2026

Denial of service in Linux kernel 7.1 before 7.1.11 allows attackers to hang AMDGPU coredump processing via a hung GPU job. In amdgpu_devcoredump_format, an instruction-buffer reservation can reacquire the root page-directory dma_resv mutex without a shared ww_acquire_ctx and block forever. The deadlock requires an AMD GPU instruction-buffer object that shares the root reservation; disabling GPU recovery also causes repeated timeout warnings to flood the kernel log.

CVSS severityUnavailable
Unscored
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux kernel 7.1 before 7.1.11 allows attackers to hang AMDGPU coredump processing via a hung GPU job. In amdgpu_devcoredump_format, an instruction-buffer reservation can reacquire the root page-directory dma_resv mutex without a shared ww_acquire_ctx and block forever. The deadlock requires an AMD GPU instruction-buffer object that shares the root reservation; disabling GPU recovery also causes repeated timeout warnings to flood the kernel log.

The record

CVE
CVE-2026-80919
Published
Sep 9, 2026
Updated
Sep 9, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 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=7.1
  2. Affected versionversion=7b15fc2d1f1a00fb99f0146e404ff2600999ec74 <4e9b4dee0777ec9c835a4746e2d30382dd9d1044
  3. Affected versionversion=7b15fc2d1f1a00fb99f0146e404ff2600999ec74 <7152b248dc3c8d5fa8629e99ed5655dd41b51562

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=7.1; version=7b15fc2d1f1a00fb99f0146e404ff2600999ec74 <4e9b4dee0777ec9c835a4746e2d30382dd9d1044; version=7b15fc2d1f1a00fb99f0146e404ff2600999ec74 <7152b248dc3c8d5fa8629e99ed5655dd41b51562

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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