# CVE-2026-90101: bnxt_en: Fix call to hardware monitoring event handler

> A bug in the bnxt_en network driver passes the wrong device pointer to a hardware monitoring function, potentially causing a kernel crash.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 17 Sep 2026
- **Updated:** 19 Oct 2026
- **Also known as:** BELL-CVE-2026-90101, DEBIAN-CVE-2026-90101, GHSA-vwp5-jm9v-mqjg, UBUNTU-CVE-2026-90101

## What is CVE-2026-90101?

CVE-2026-90101 is a vulnerability in Linux, published on 17 Sep 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:

bnxt_en: Fix call to hardware monitoring event handler

The first parameter of hwmon_notify_event() is supposed to be the hardware
monitoring device. The bnxt driver calls it with the platform device as
first parameter instead. This API break results in undefined behavior and
may result in a crash.

Pass the hardware monitoring device as parameter instead to fix the
problem.

## Which versions are affected by CVE-2026-90101?


## How do I fix CVE-2026-90101?

Apply the vendor's patch.

## Is CVE-2026-90101 being exploited?

There is no known exploitation of CVE-2026-90101 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-90101 and fix it if it is affected.

What it is: CVE-2026-90101 is a vulnerability in Linux, published on 17 Sep 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-2026-90101 in the wild and no public exploit code.

Affected product: 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-2026-90101/ (Markdown: https://insights.sbomify.com/CVE-2026-90101/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-90101
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-90101
- OSV: https://osv.dev/vulnerability/CVE-2026-90101

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-90101/
Summaries are generated and may contain mistakes; the official description above is the record.