# CVE-2026-23422: dpaa2-switch: Fix interrupt storm after receiving bad if_id in IRQ handler

> An attacker can cause a denial of service via an interrupt storm in the dpaa2-switch driver by triggering an out-of-bounds interface ID.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:** 3 Apr 2026
- **Updated:** 15 Oct 2026
- **Also known as:** BELL-CVE-2026-23422, DEBIAN-CVE-2026-23422, GHSA-6rph-vpvq-7wvw, ROOT-OS-DEBIAN-12-CVE-2026-23422, ROOT-OS-DEBIAN-13-CVE-2026-23422, UBUNTU-CVE-2026-23422

## What is CVE-2026-23422?

CVE-2026-23422 is a high-severity denial of service vulnerability in Linux kernel, published on 3 Apr 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:

dpaa2-switch: Fix interrupt storm after receiving bad if_id in IRQ handler

Commit 31a7a0bbeb00 ("dpaa2-switch: add bounds check for if_id in IRQ
handler") introduces a range check for if_id to avoid an out-of-bounds
access. If an out-of-bounds if_id is detected, the interrupt status is
not cleared. This may result in an interrupt storm.

Clear the interrupt status after detecting an out-of-bounds if_id to avoid
the problem.

Found by an experimental AI code review agent at Google.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2026-23422?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2026-23422?

Apply the vendor's patch.

## Is CVE-2026-23422 being exploited?

There is no known exploitation of CVE-2026-23422 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-2026-23422 and fix it if it is affected.

What it is: CVE-2026-23422 is a high-severity denial of service vulnerability in Linux kernel, published on 3 Apr 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-2026-23422 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-2026-23422/ (Markdown: https://insights.sbomify.com/CVE-2026-23422/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-23422
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-23422
- OSV: https://osv.dev/vulnerability/CVE-2026-23422

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-23422/
Summaries are generated and may contain mistakes; the official description above is the record.