# CVE-2025-38275: phy: qcom-qmp-usb: Fix an NULL vs IS_ERR() bug

> A NULL pointer dereference in the Qualcomm QMP USB PHY driver can cause a kernel crash, requiring a patch to fix error handling.

- **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:** 10 Jul 2025
- **Updated:** 23 May 2026
- **Also known as:** AZL-64989, BELL-CVE-2025-38275, DEBIAN-CVE-2025-38275, GHSA-c5h2-x786-2cv9, ROOT-OS-UBUNTU-2204-CVE-2025-38275, ROOT-OS-UBUNTU-2404-CVE-2025-38275, UBUNTU-CVE-2025-38275

## What is CVE-2025-38275?

CVE-2025-38275 is a medium-severity vulnerability in Debian Debian Linux, published on 10 Jul 2025. 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-qmp-usb: Fix an NULL vs IS_ERR() bug

The qmp_usb_iomap() helper function currently returns the raw result of
devm_ioremap() for non-exclusive mappings. Since devm_ioremap() may return
a NULL pointer and the caller only checks error pointers with IS_ERR(),
NULL could bypass the check and lead to an invalid dereference.

Fix the issue by checking if devm_ioremap() returns NULL. When it does,
qmp_usb_iomap() now returns an error pointer via IOMEM_ERR_PTR(-ENOMEM),
ensuring safe and consistent error handling.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2025-38275?

It affects 2 products.


Products: Debian Debian Linux, Linux kernel.

## How do I fix CVE-2025-38275?

Apply the vendor's patch.

## Is CVE-2025-38275 being exploited?

There is no known exploitation of CVE-2025-38275 in the wild and no public exploit code.

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## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-38275 and fix it if it is affected.

What it is: CVE-2025-38275 is a medium-severity vulnerability in Debian Debian Linux, published on 10 Jul 2025. 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-2025-38275 in the wild and no public exploit code.

Affected product: Debian Debian Linux. 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-2025-38275/ (Markdown: https://insights.sbomify.com/CVE-2025-38275/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-38275
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-38275
- OSV: https://osv.dev/vulnerability/CVE-2025-38275

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-38275/
Summaries are generated and may contain mistakes; the official description above is the record.