CVE-2025-68244

Kernel hang via i915 GGTT lock inversion

Published Dec 16, 2025 · Updated Dec 16, 2025

Deadlock in affected Linux kernel i915 drivers allows local users to hang systems during GGTT VMA pinning on supported Intel hardware. i915_vma_pin_ww synchronously commits fence work while a reservation lock is held, after which intel_ggtt_bind_vma invokes stop_machine and acquires the cpu_hotplug lock in the reverse order. Exposure requires a Cherry View processor, or a Broxton system with VTD enabled, and the consequence is limited to service interruption.

CVSS severity4.7
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deadlock in affected Linux kernel i915 drivers allows local users to hang systems during GGTT VMA pinning on supported Intel hardware. i915_vma_pin_ww synchronously commits fence work while a reservation lock is held, after which intel_ggtt_bind_vma invokes stop_machine and acquires the cpu_hotplug lock in the reverse order. Exposure requires a Cherry View processor, or a Broxton system with VTD enabled, and the consequence is limited to service interruption.

The record

CVE
CVE-2025-68244
Published
Dec 16, 2025
Updated
Dec 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 2025Record 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=5.13
  2. Affected versionversion=7d1c2618eac590d948eb33b9807d913ddb6e105f <20d94a6117b752fd10a78cefdc1cf2c16706048b
  3. Affected versionversion=7d1c2618eac590d948eb33b9807d913ddb6e105f <3dec22bde207a36f1b8a4b80564cbbe13996a7cd
  4. Affected versionversion=7d1c2618eac590d948eb33b9807d913ddb6e105f <4e73066e3323add260e46eb51f79383d87950281
  5. Affected versionversion=7d1c2618eac590d948eb33b9807d913ddb6e105f <84bbe327a5cbb060f3321c9d9d4d53936fc1ef9b
  6. Affected versionversion=7d1c2618eac590d948eb33b9807d913ddb6e105f <858a50127be714f55c3bcb25621028d4a323d77e
  7. Affected versionversion=7d1c2618eac590d948eb33b9807d913ddb6e105f <e988634d7aae7214818b9c86cd7ef9e78c84b02d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=7d1c2618eac590d948eb33b9807d913ddb6e105f <20d94a6117b752fd10a78cefdc1cf2c16706048b; version=7d1c2618eac590d948eb33b9807d913ddb6e105f <3dec22bde207a36f1b8a4b80564cbbe13996a7cd; version=7d1c2618eac590d948eb33b9807d913ddb6e105f <4e73066e3323add260e46eb51f79383d87950281; version=7d1c2618eac590d948eb33b9807d913ddb6e105f <84bbe327a5cbb060f3321c9d9d4d53936fc1ef9b; version=7d1c2618eac590d948eb33b9807d913ddb6e105f <858a50127be714f55c3bcb25621028d4a323d77e; version=7d1c2618eac590d948eb33b9807d913ddb6e105f <e988634d7aae7214818b9c86cd7ef9e78c84b02d

Published CVSS scores

4.7OracleCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

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)
Vectorlocal
Privilegesauthenticated
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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