CVE-2026-98391

Kernel warning via stale page-fault acknowledgments

Published Oct 14, 2026 · Updated Oct 14, 2026

A race in drm/xe in Linux Kernel 6.19 allows attackers to trigger a kernel warning via stale GPU page-fault acknowledgments. The xe_pagefault_queue_work worker acknowledges faults from torn-down GPU virtual memory contexts without holding a runtime power-management reference, reaching guc_ct_send_locked() after device suspension. The condition requires the Xe GPU driver, queued stale faults, and autosuspend during teardown; the documented consequence is an assertion warning, not a demonstrated crash or privilege escalation.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A race in drm/xe in Linux Kernel 6.19 allows attackers to trigger a kernel warning via stale GPU page-fault acknowledgments. The xe_pagefault_queue_work worker acknowledges faults from torn-down GPU virtual memory contexts without holding a runtime power-management reference, reaching guc_ct_send_locked() after device suspension. The condition requires the Xe GPU driver, queued stale faults, and autosuspend during teardown; the documented consequence is an assertion warning, not a demonstrated crash or privilege escalation.

The record

CVE
CVE-2026-98391
Published
Oct 14, 2026
Updated
Oct 14, 2026
Vendor
Linux Foundation
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 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=6.19
  2. Affected versionversion=f289f7807119128d4f9d59f34ac557549c7562e5 <20fce5b34b21a995839743b4917a1edd2fd503ba
  3. Affected versionversion=f289f7807119128d4f9d59f34ac557549c7562e5 <25764620ec64c0142e2c87c41787f45540cf09ff

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Linux Foundation · Linux Kernelversion=6.19; version=f289f7807119128d4f9d59f34ac557549c7562e5 <20fce5b34b21a995839743b4917a1edd2fd503ba; version=f289f7807119128d4f9d59f34ac557549c7562e5 <25764620ec64c0142e2c87c41787f45540cf09ff

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
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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