# CVE-2025-40180: mailbox: zynqmp-ipi: Fix out-of-bounds access in mailbox cleanup loop

> Out-of-bounds access in the ZynqMP IPI mailbox driver cleanup loop can lead to memory corruption and potential system crashes or code execution.

- **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:** 21 Oct 2026
- **Also known as:** AZL-70064, BELL-CVE-2025-40180, DEBIAN-CVE-2025-40180, GHSA-78x4-5hh5-f94g, ROOT-OS-DEBIAN-11-CVE-2025-40180, ROOT-OS-DEBIAN-12-CVE-2025-40180, ROOT-OS-DEBIAN-13-CVE-2025-40180, ROOT-OS-UBUNTU-2204-CVE-2025-40180, ROOT-OS-UBUNTU-2404-CVE-2025-40180, UBUNTU-CVE-2025-40180

## What is CVE-2025-40180?

CVE-2025-40180 is a memory corruption 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:

mailbox: zynqmp-ipi: Fix out-of-bounds access in mailbox cleanup loop

The cleanup loop was starting at the wrong array index, causing
out-of-bounds access.
Start the loop at the correct index for zero-indexed arrays to prevent
accessing memory beyond the allocated array bounds.

## Which versions are affected by CVE-2025-40180?


## How do I fix CVE-2025-40180?

Apply the vendor's patch.

## Is CVE-2025-40180 being exploited?

There is no known exploitation of CVE-2025-40180 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-40180 and fix it if it is affected.

What it is: CVE-2025-40180 is a memory corruption 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-2025-40180 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-2025-40180/ (Markdown: https://insights.sbomify.com/CVE-2025-40180/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-40180
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-40180
- OSV: https://osv.dev/vulnerability/CVE-2025-40180

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-40180/
Summaries are generated and may contain mistakes; the official description above is the record.