CVE-2024-56540

/// Technical description

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

accel/ivpu: Prevent recovery invocation during probe and resume

Refactor IPC send and receive functions to allow correct

handling of operations that should not trigger a recovery process.

Expose ivpu_send_receive_internal(), which is now utilized by the D0i3

entry, DCT initialization, and HWS initialization functions.

These functions have been modified to return error codes gracefully,

rather than initiating recovery.

The updated functions are invoked within ivpu_probe() and ivpu_resume(),

ensuring that any errors encountered during these stages result in a proper

teardown or shutdown sequence. The previous approach of triggering recovery

within these functions could lead to a race condition, potentially causing

undefined behavior and kernel crashes due to null pointer dereferences.

/// 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