CVE-2025-37907 Information

Description

In the Linux kernel the following vulnerability has been resolved:

accel/ivpu: Fix locking order in ivpu_job_submit

Fix deadlock in job submission and abort handling. When a thread aborts currently executing jobs due to a fault it first locks the global lock protecting submitted_jobs (1).

After the last job is destroyed it proceeds to release the related context and locks file_priv (2). Meanwhile in the job submission thread the file_priv lock (2) is taken first and then the submitted_jobs lock (1) is obtained when a job is added to the submitted jobs list.

   CPU0                            CPU1
   ----                    	       ----

(for example due to a fault) (jobs submissions keep coming)

lock(&vdev->submitted_jobs_lock) 1 ivpu_jobs_abort_all() job_destroy() lock(&file_priv->lock) 2 lock(&vdev->submitted_jobs_lock) 1 file_priv_release() lock(&vdev->context_list_lock) lock(&file_priv->lock) 2

This order of locking causes a deadlock. To resolve this issue change the order of locking in ivpu_job_submit().

Reference

https://git.kernel.org/stable/c/079d2622f8c9e0c380149645fff21d35c59ce6ff https://git.kernel.org/stable/c/ab680dc6c78aa035e944ecc8c48a1caab9f39924 https://git.kernel.org/stable/c/b9b70924a272c2d72023306bc56f521c056212ee