---
id: CVE-2026-98731
title: 'Bluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_frame()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  Bluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_frame()

  plen is u16 and computed as HDR_SIZE + dlen. For ACL/ISO frames dlen
  is a 16-bit field, so a va…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <
    c3a3842c109ac130c6db3aa0014cc8cd344928ad
  - >-
    Linux >= c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <
    c3b5e6da4ba6485bffda9753d8339c28855207aa
  - >-
    Linux >= c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <
    b2cb5ea1dc8cf829816370fc1399e6a1d2d1bca9
  - >-
    Linux >= c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <
    7dbeb6935ac331b0cba6c41cabd8e9d02d5f64ea
  - Linux 6.10
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T15:47:08.399Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98731'
references:
  - url: 'https://git.kernel.org/stable/c/c3a3842c109ac130c6db3aa0014cc8cd344928ad'
  - url: 'https://git.kernel.org/stable/c/c3b5e6da4ba6485bffda9753d8339c28855207aa'
  - url: 'https://git.kernel.org/stable/c/b2cb5ea1dc8cf829816370fc1399e6a1d2d1bca9'
  - url: 'https://git.kernel.org/stable/c/7dbeb6935ac331b0cba6c41cabd8e9d02d5f64ea'
tags:
  - cve.org
ingestedAt: '2026-10-18T16:47:32.505Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_frame()

plen is u16 and computed as HDR_SIZE + dlen. For ACL/ISO frames dlen
is a 16-bit field, so a value >= 0xFFFC wraps the sum, bypassing the
"skb->len < plen" check and letting skb_trim() truncate the packet.

Widen plen to u32 so the addition cannot wrap.

## Affected

- `Linux >= c2b636b3f788d10486a6691ad6dd3ec4c93bd78e < c3a3842c109ac130c6db3aa0014cc8cd344928ad`
- `Linux >= c2b636b3f788d10486a6691ad6dd3ec4c93bd78e < c3b5e6da4ba6485bffda9753d8339c28855207aa`
- `Linux >= c2b636b3f788d10486a6691ad6dd3ec4c93bd78e < b2cb5ea1dc8cf829816370fc1399e6a1d2d1bca9`
- `Linux >= c2b636b3f788d10486a6691ad6dd3ec4c93bd78e < 7dbeb6935ac331b0cba6c41cabd8e9d02d5f64ea`
- `Linux 6.10`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.