CVE-2026-43446

Analyzed Analyzed - Analysis Complete

Runtime Suspend Deadlock in AMDXDNA Linux Kernel Driver

Publication date: 2026-05-08

Last updated on: 2026-05-21

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix runtime suspend deadlock when there is pending job The runtime suspend callback drains the running job workqueue before suspending the device. If a job is still executing and calls pm_runtime_resume_and_get(), it can deadlock with the runtime suspend path. Fix this by moving pm_runtime_resume_and_get() from the job execution routine to the job submission routine, ensuring the device is resumed before the job is queued and avoiding the deadlock during runtime suspend.

CVSS Scores

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Meta Information

Published

2026-05-08

Last Modified

2026-05-21

Generated

2026-07-09

AI Q&A

2026-05-08

EPSS Evaluated

2026-07-08

NVD

CVE-2026-43446

EUVD

EUVD-2026-28752

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	From 6.19 (inc) to 6.19.9 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-667	The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

Attack-Flow Graph

Mitigation Strategies

The vulnerability is fixed by updating the Linux kernel to a version where the runtime suspend deadlock in the accel/amdxdna driver is resolved.

Specifically, the fix involves moving the pm_runtime_resume_and_get() call from the job execution routine to the job submission routine to avoid deadlocks during runtime suspend.

Therefore, the immediate mitigation step is to apply the kernel update that includes this fix.

Executive Summary

This vulnerability exists in the Linux kernel's amdxdna accelerator component. It involves a deadlock situation during runtime suspend when there is a pending job. Specifically, the runtime suspend callback tries to drain the running job workqueue before suspending the device. However, if a job is still executing and calls pm_runtime_resume_and_get(), it can cause a deadlock with the runtime suspend process.

The fix moves the pm_runtime_resume_and_get() call from the job execution routine to the job submission routine. This ensures the device is resumed before the job is queued, thereby avoiding the deadlock during runtime suspend.

Impact Analysis

This vulnerability can cause a deadlock in the Linux kernel when the system attempts to suspend a device while a job is still running and interacting with power management routines. This deadlock can lead to system hangs or freezes during runtime suspend operations, potentially affecting system stability and availability.

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