CVE-2025-71299

/// Technical description

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

spi: cadence-quadspi: Parse DT for flashes with the rest of the DT parsing

The recent refactoring of where runtime PM is enabled done in commit

f1eb4e792bb1 ("spi: spi-cadence-quadspi: Enable pm runtime earlier to

avoid imbalance") made the fact that when we do a pm_runtime_disable()

in the error paths of probe() we can trigger a runtime disable which in

turn results in duplicate clock disables. This is particularly likely

to happen when there is missing or broken DT description for the flashes

attached to the controller.

Early on in the probe function we do a pm_runtime_get_noresume() since

the probe function leaves the device in a powered up state but in the

error path we can't assume that PM is enabled so we also manually

disable everything, including clocks. This means that when runtime PM is

active both it and the probe function release the same reference to the

main clock for the IP, triggering warnings from

/// 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