CVE-2025-71193 phy: qcom-qusb2: Fix NULL pointer dereference on early suspend
A race condition in the Qualcomm QUSB2 PHY driver causes a kernel crash during boot, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-71193?
CVE-2025-71193 is a vulnerability in Linux, published on 4 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2025-71193?
How do I fix CVE-2025-71193?
Apply the vendor's patch.
Is CVE-2025-71193 being exploited?
There is no known exploitation of CVE-2025-71193 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-71193, DEBIAN-CVE-2025-71193, GHSA-wqf4-5q2q-7334, ROOT-OS-DEBIAN-11-CVE-2025-71193, ROOT-OS-DEBIAN-12-CVE-2025-71193, ROOT-OS-UBUNTU-2204-CVE-2025-71193 and 2 more.