CVE-2023-52632

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: Fix lock dependency warning with srcu

======================================================

WARNING: possible circular locking dependency detected

6.5.0-kfd-yangp #2289 Not tainted

------------------------------------------------------

kworker/0:2/996 is trying to acquire lock:

(srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x5/0x1a0

but task is already holding lock:

((work_completion)(&svms->deferred_list_work)){+.+.}-{0:0}, at:

process_one_work+0x211/0x560

which lock already depends on the new lock.

the existing dependency chain (in reverse order) is:

-> #3 ((work_completion)(&svms->deferred_list_work)){+.+.}-{0:0}:

__flush_work+0x88/0x4f0

svm_range_list_lock_and_flush_work+0x3d/0x110 [amdgpu]

svm_range_set_attr+0xd6/0x14c0 [amdgpu]

kfd_ioctl+0x1d1/0x630 [amdgpu]

__x64_sys_ioctl+0x88/0xc0

-> #2 (&info->lock#2){+.+.}-{3:3}:

__mutex_lock+0

/// 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.

/// References