CVE-2025-40310

Kernel panic via amdkfd teardown race

Published Dec 8, 2025 · Updated May 11, 2026

Race condition in the Linux kernel allows local users to crash the system via a KGD interrupt during amdkfd teardown. amdgpu_amdkfd_device_fini_sw can free the KFD device after node cleanup while KGD interrupts remain active, leaving kgd2kfd_interrupt to dereference freed state. Reachability requires local access and AMD KFD hardware while teardown overlaps an interrupt; the documented consequence is a kernel panic.

CVSS severity5.5
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

Race condition in the Linux kernel allows local users to crash the system via a KGD interrupt during amdkfd teardown. amdgpu_amdkfd_device_fini_sw can free the KFD device after node cleanup while KGD interrupts remain active, leaving kgd2kfd_interrupt to dereference freed state. Reachability requires local access and AMD KFD hardware while teardown overlaps an interrupt; the documented consequence is a kernel panic.

The record

CVE
CVE-2025-40310
Published
Dec 8, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 8, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=6.5
  2. Affected versionversion=74c5b85da75475c73a8f040397610fbfcc2c3e78 <2f89a2d15550b653caaeeab7ab68c4d7583fd4fe
  3. Affected versionversion=74c5b85da75475c73a8f040397610fbfcc2c3e78 <93f8d67ef8b50334a26129df4da5a4cb60ad4090
  4. Affected versionversion=74c5b85da75475c73a8f040397610fbfcc2c3e78 <99d7181bca34e96fbf61bdb6844918bdd4df2814
  5. Affected versionversion=74c5b85da75475c73a8f040397610fbfcc2c3e78 <bc9e789053abe463f8cf74eee5fc2f157c11a79f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.5; version=74c5b85da75475c73a8f040397610fbfcc2c3e78 <2f89a2d15550b653caaeeab7ab68c4d7583fd4fe; version=74c5b85da75475c73a8f040397610fbfcc2c3e78 <93f8d67ef8b50334a26129df4da5a4cb60ad4090; version=74c5b85da75475c73a8f040397610fbfcc2c3e78 <99d7181bca34e96fbf61bdb6844918bdd4df2814; version=74c5b85da75475c73a8f040397610fbfcc2c3e78 <bc9e789053abe463f8cf74eee5fc2f157c11a79f

Published CVSS scores

5.5TenableCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.6TenableAV:L/AC:L/Au:S/C:N/I:N/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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

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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