CVE-2025-40113

/// Technical description

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

remoteproc: qcom: pas: Shutdown lite ADSP DTB on X1E

The ADSP firmware on X1E has separate firmware binaries for the main

firmware and the DTB. The same applies for the "lite" firmware loaded by

the boot firmware.

When preparing to load the new ADSP firmware we shutdown the lite_pas_id

for the main firmware, but we don't shutdown the corresponding lite pas_id

for the DTB. The fact that we're leaving it "running" forever becomes

obvious if you try to reuse (or just access) the memory region used by the

"lite" firmware: The &adsp_boot_mem is accessible, but accessing the

&adsp_boot_dtb_mem results in a crash.

We don't support reusing the memory regions currently, but nevertheless we

should not keep part of the lite firmware running. Fix this by adding the

lite_dtb_pas_id and shutting it down as well.

We don't have a way to detect if the lite firmware is actually running yet,

so ignore the return status of qcom_scm_p

/// 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