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

CVE-2026-23422 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-23422, released April 3, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-23422
- Priority: High
- CVSS: 7.8 (Important)
- EPSS: 0.0013
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 3, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23422

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.170-1 | [DEBIAN-CVE-2026-23422](https://patchblox.com/security/data/fix/linux/debian-cve-2026-23422.md) | Apr 3, 2026 |
| Linux | linux Debian 13.5 (trixie) | 6.12.85-1 | [DEBIAN-CVE-2026-23422](https://patchblox.com/security/data/fix/linux/debian-cve-2026-23422.md) | Apr 3, 2026 |
| Linux | linux Debian 14 | 6.19.8-1 | [DEBIAN-CVE-2026-23422](https://patchblox.com/security/data/fix/linux/debian-cve-2026-23422.md) | Apr 3, 2026 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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