CVE-2026-98391
In the Linux kernel, the following vulnerability has been resolved: drm/xe: Guard page-fault worker with runtime PM check During VM teardown, the VM's runtime PM reference is dropped asynchronous…
Overview
CVE-2026-98391 is a known-severity vulnerability. It was published on October 14, 2026.
Technical description
In the Linux kernel, the following vulnerability has been resolved:
drm/xe: Guard page-fault worker with runtime PM check
During VM teardown, the VM's runtime PM reference is dropped
asynchronously, allowing the device to autosuspend while stale page
faults belonging to the now-dead VM are still queued. When the
page-fault worker later tries to ack one of these, it calls into
guc_ct_send_locked() on an already-suspended device, tripping:
Assertion `!xe_pm_runtime_suspended(xe)` failed!
WARNING at xe_device.c:1267 xe_device_assert_mem_access+0x11c/0x140 [xe]
A live VM/exec queue always holds a PM reference while it has
outstanding work, so if the device is suspended at ack time, the
owning context is already gone and the fault is stale.
Take a runtime PM reference across the entire pagefault
queue worker to safely deliver acks for torn-down VMs.
v3:
- Move PM ref to the generic xe_pagefault_queue_work using
guard(xe_pm_runtime)(xe) instead of tracking it in the GuC
back
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
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Frequently asked questions
What is CVE-2026-98391?
CVE-2026-98391 is a known-severity vulnerability. It was published on October 14, 2026.
How severe is CVE-2026-98391?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2026-98391?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-98391?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-98391 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.