---
id: CVE-2026-80762
title: >-
  kernel: Bluetooth: hci_sync: Fix accept list UAF during suspend
  (CVE-2026-80762)
summary: >-
  A flaw was found in the Bluetooth subsystem of the Linux kernel. During the
  system suspend process, a timing issue can occur where the
  `hci_update_event_filter_sync()` function attempts to access memory that has
  already been released. This…
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-416
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-04'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T00:52:42+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80762.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80762.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80762'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2528544'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80762'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80762'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80762.mbox
  - url: 'https://kernelcve.org/list/?q=CVE-2026-80762'
  - url: 'https://git.kernel.org/stable/c/bb5f5414d1a6272a16f68684e998f4063dd19f57'
  - url: 'https://git.kernel.org/stable/c/b5181516a9f5c2fdb3271cdad72a5b16c6963a44'
  - url: 'https://git.kernel.org/stable/c/87ad116ac3abc6f2ce2b5b6c488f633003581eee'
  - url: 'https://git.kernel.org/stable/c/fe93a697a7a92fa9adf78c9ff67a10db3193290c'
  - url: 'https://git.kernel.org/stable/c/95bb57bc11a91caf042ad00fca85e480d3fda37f'
  - url: 'https://git.kernel.org/stable/c/29c59212a507804d7616b8abf491d30b4ab8e75f'
  - url: 'https://git.kernel.org/stable/c/f57b399c4fa1501b2d5451f52d861ece86bcf3db'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00173
epssPercentile: 0.06641
ingestedAt: '2026-10-19T10:20:54.951Z'
---

## Overview

A flaw was found in the Bluetooth subsystem of the Linux kernel. During the system suspend process, a timing issue can occur where the `hci_update_event_filter_sync()` function attempts to access memory that has already been released. This Use-After-Free (UAF) vulnerability could allow a local attacker to cause a system crash, leading to a denial of service, or potentially execute arbitrary code with elevated privileges.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80762.json)

**kernel: Bluetooth: hci_sync: Fix accept list UAF during suspend** — rated Moderate by Red Hat. Released 2026-09-04, updated 2026-10-26.

Affected:

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

No fix planned:

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

Not affected:

- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat OpenShift Container Platform 4

## Remediation

Fix deferred

Workarounds / mitigations:

- Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.