---
id: CVE-2026-98735
title: >-
  kernel: Bluetooth: hci_core: Serialize ACL scheduling with channel deletion
  (CVE-2026-98735)
summary: >-
  A flaw was found in the Linux kernel's Bluetooth subsystem. A race condition
  occurs when outgoing network packets are scheduled while the associated
  communication channel is concurrently closed and freed during connection
  teardown. A local…
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-825
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 6
  - enterprise_linux 7
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-10-18'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T01:35:29+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98735.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98735.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98735'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2555083'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98735'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98735'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98735.mbox
  - url: 'https://git.kernel.org/stable/c/780affacd92977fd9b819bdc4f26a6832cb27fda'
  - url: 'https://git.kernel.org/stable/c/51f95ea451f25d7e3f048c0f438f04fa74688aae'
  - url: 'https://git.kernel.org/stable/c/86e9708f9d19a7f1bd5dc9c1652d07707f79f5bd'
  - url: 'https://git.kernel.org/stable/c/4fda8f0abeea9929036446d89a476fb8298abcb0'
  - url: 'https://git.kernel.org/stable/c/f4845ab191a4f686a5da481fbba90ed73bb693b0'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00168
epssPercentile: 0.05969
ingestedAt: '2026-10-18T16:47:32.504Z'
---

## Overview

A flaw was found in the Linux kernel's Bluetooth subsystem. A race condition occurs when outgoing network packets are scheduled while the associated communication channel is concurrently closed and freed during connection teardown. A local attacker could exploit this flaw to trigger a use-after-free memory error, leading to a system crash (denial of service) or potentially arbitrary code execution.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98735.json)

**kernel: Bluetooth: hci_core: Serialize ACL scheduling with channel deletion** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.

Affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

No fix planned:

- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

## Remediation

Out of support scope