CVE-2025-71193

Technical Description

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

phy: qcom-qusb2: Fix NULL pointer dereference on early suspend

Enabling runtime PM before attaching the QPHY instance as driver data

can lead to a NULL pointer dereference in runtime PM callbacks that

expect valid driver data. There is a small window where the suspend

callback may run after PM runtime enabling and before runtime forbid.

This causes a sporadic crash during boot:

```

Unable to handle kernel NULL pointer dereference at virtual address 00000000000000a1

[...]

CPU: 0 UID: 0 PID: 11 Comm: kworker/0:1 Not tainted 6.16.7+ #116 PREEMPT

Workqueue: pm pm_runtime_work

pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)

pc : qusb2_phy_runtime_suspend+0x14/0x1e0 [phy_qcom_qusb2]

lr : pm_generic_runtime_suspend+0x2c/0x44

[...]

```

Attach the QPHY instance as driver data before enabling runtime PM to

prevent NULL pointer dereference in runtime PM callbacks.

Reorder pm_runtime_enable() and pm_runtime_fo

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