CVE-2026-89827

Kernel crash via uninitialized UVD ring completion

Published Sep 16, 2026 · Updated Sep 16, 2026

Null-pointer dereference in the amdgpu UVD resume path in Linux 6.5 allows attackers to crash an SR-IOV virtual function via unspecified vectors. The amdgpu_uvd_resume() function force-completes the decode ring while restoring its fence sequence even though uvd_v7_0_sw_init() leaves that ring uninitialized for an SR-IOV VF. The fault is limited to the UVD 7.0 SR-IOV virtual-function path, and the published report shows a kernel crash rather than data access or code execution.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null-pointer dereference in the amdgpu UVD resume path in Linux 6.5 allows attackers to crash an SR-IOV virtual function via unspecified vectors. The amdgpu_uvd_resume() function force-completes the decode ring while restoring its fence sequence even though uvd_v7_0_sw_init() leaves that ring uninitialized for an SR-IOV VF. The fault is limited to the UVD 7.0 SR-IOV virtual-function path, and the published report shows a kernel crash rather than data access or code execution.

The record

CVE
CVE-2026-89827
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
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=0a33b11d26c6b7e975b54d469a739ffac29f67ab <6760f5cb12d2366ddd58a2d8637f7583d73f596b
  2. Affected versionversion=0a33b11d26c6b7e975b54d469a739ffac29f67ab <967a179463d3227dfaf9200fd654c1f5a26a11e8
  3. Affected versionversion=6.5

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=0a33b11d26c6b7e975b54d469a739ffac29f67ab <6760f5cb12d2366ddd58a2d8637f7583d73f596b; version=0a33b11d26c6b7e975b54d469a739ffac29f67ab <967a179463d3227dfaf9200fd654c1f5a26a11e8; version=6.5

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 11, 2026Sep 17, 2026
Latest reporting daySep 17, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application 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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