CVE-2025-71154 net: usb: rtl8150: fix memory leak on usb_submit_urb() failure
A memory leak in the Linux kernel's rtl8150 USB driver allows attackers to cause a denial of service by triggering submission failures.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-71154?
CVE-2025-71154 is a medium-severity denial of service vulnerability in Linux kernel, published on 23 Jan 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:
net: usb: rtl8150: fix memory leak on usb_submit_urb() failure
In async_set_registers(), when usb_submit_urb() fails, the allocated async_req structure and URB are not freed, causing a memory leak.
The completion callback async_set_reg_cb() is responsible for freeing these allocations, but it is only called after the URB is successfully submitted and completes (successfully or with error). If submission fails, the callback never runs and the memory is leaked.
Fix this by freeing both the URB and the request structure in the error path when usb_submit_urb() fails.
Weakness: CWE-401
Which versions are affected by CVE-2025-71154?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-71154?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-71154 being exploited?
There is no known exploitation of CVE-2025-71154 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-78431, BELL-CVE-2025-71154, DEBIAN-CVE-2025-71154, GHSA-5cmq-7jhj-36r8, ROOT-OS-DEBIAN-11-CVE-2025-71154, ROOT-OS-DEBIAN-12-CVE-2025-71154 and 4 more.