# CVE-2025-40192: Revert "ipmi: fix msg stack when IPMI is disconnected"

> A bug in the Linux kernel IPMI driver can cause an infinite loop and system hang if the BMC misbehaves, requiring a kernel patch.

- **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:** 12 Nov 2025
- **Updated:** 11 May 2026
- **Also known as:** AZL-70106, BELL-CVE-2025-40192, DEBIAN-CVE-2025-40192, GHSA-7w8j-pr8f-4w8p, ROOT-OS-DEBIAN-13-CVE-2025-40192, ROOT-OS-UBUNTU-2204-CVE-2025-40192, ROOT-OS-UBUNTU-2404-CVE-2025-40192, UBUNTU-CVE-2025-40192

## What is CVE-2025-40192?

CVE-2025-40192 is a denial of service vulnerability in Linux, published on 12 Nov 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:

Revert "ipmi: fix msg stack when IPMI is disconnected"

This reverts commit c608966f3f9c2dca596967501d00753282b395fc.

This patch has a subtle bug that can cause the IPMI driver to go into an
infinite loop if the BMC misbehaves in a certain way.  Apparently
certain BMCs do misbehave this way because several reports have come in
recently about this.

## Which versions are affected by CVE-2025-40192?


## How do I fix CVE-2025-40192?

Apply the vendor's patch.

## Is CVE-2025-40192 being exploited?

There is no known exploitation of CVE-2025-40192 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-40192 and fix it if it is affected.

What it is: CVE-2025-40192 is a denial of service vulnerability in Linux, published on 12 Nov 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-2025-40192 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-2025-40192/ (Markdown: https://insights.sbomify.com/CVE-2025-40192/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-40192
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-40192
- OSV: https://osv.dev/vulnerability/CVE-2025-40192

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-40192/
Summaries are generated and may contain mistakes; the official description above is the record.