---
id: CVE-2024-35978
title: |-
  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.
summary: |-
  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.
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-401
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 4.1, < 4.19.313'
  - 'linux_kernel >= 4.20, < 5.4.275'
  - 'linux_kernel >= 5.5, < 5.10.216'
  - 'linux_kernel >= 5.11, < 5.15.156'
  - 'linux_kernel >= 5.16, < 6.1.87'
  - 'linux_kernel >= 6.2, < 6.6.28'
  - 'linux_kernel >= 6.7, < 6.8.7'
patched:
  - linux_kernel 6.8.7
published: '2024-05-20'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:18:15.663'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-35978'
references:
  - url: 'https://git.kernel.org/stable/c/45d355a926ab40f3ae7bc0b0a00cb0e3e8a5a810'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4beab84fbb50df3be1d8f8a976e6fe882ca65cb2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/66fab1e120b39f8f47a94186ddee36006fc02ca8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/75193678cce993aa959e7764b6df2f599886dd06'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8478394f76c748862ef179a16f651f752bdafaf0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/89a32741f4217856066c198a4a7267bcdd1edd67'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9ab5e44b9bac946bd49fd63264a08cd1ea494e76'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e4cb8382fff6706436b66eafd9c0ee857ff0a9f5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/45d355a926ab40f3ae7bc0b0a00cb0e3e8a5a810'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/4beab84fbb50df3be1d8f8a976e6fe882ca65cb2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/66fab1e120b39f8f47a94186ddee36006fc02ca8'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/75193678cce993aa959e7764b6df2f599886dd06'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/8478394f76c748862ef179a16f651f752bdafaf0'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/89a32741f4217856066c198a4a7267bcdd1edd67'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/9ab5e44b9bac946bd49fd63264a08cd1ea494e76'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/e4cb8382fff6706436b66eafd9c0ee857ff0a9f5'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00281
epssPercentile: 0.20497
ingestedAt: '2026-10-15T03:30:12.694Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-09-10T15:40:19.764232Z'
---

## Overview

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.

## Affected

- `linux_kernel >= 4.1, < 4.19.313`
- `linux_kernel >= 4.20, < 5.4.275`
- `linux_kernel >= 5.5, < 5.10.216`
- `linux_kernel >= 5.11, < 5.15.156`
- `linux_kernel >= 5.16, < 6.1.87`
- `linux_kernel >= 6.2, < 6.6.28`
- `linux_kernel >= 6.7, < 6.8.7`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.8.7`