# 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.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **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:** Yes
- **Published:** 23 Jan 2026
- **Updated:** 19 Oct 2026
- **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, ROOT-OS-DEBIAN-13-CVE-2025-71154, ROOT-OS-UBUNTU-2204-CVE-2025-71154, ROOT-OS-UBUNTU-2404-CVE-2025-71154, UBUNTU-CVE-2025-71154

## 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 (Missing Release of Memory after Effective Lifetime)

## Which versions are affected by CVE-2025-71154?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2025-71154?

Apply the vendor's patch.

## 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

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-71154 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2025-71154 in the wild and no public exploit code.

Affected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-71154/ (Markdown: https://insights.sbomify.com/CVE-2025-71154/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-71154
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-71154
- OSV: https://osv.dev/vulnerability/CVE-2025-71154

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-71154/
Summaries are generated and may contain mistakes; the official description above is the record.