---
id: CVE-2026-98316
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ALSA: bcd2000: Fix race between rawmidi and disconnect

  Although we tried to fix the potential UAF issues at USB disconnect on
  bcd2000 driver, there is still an overloo…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ALSA: bcd2000: Fix race between rawmidi and disconnect

  Although we tried to fix the potential UAF issues at USB disconnect on
  bcd2000 driver, there is still an overloo…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 3c00004f134fc819f9d9e202c6a64acde0a1f8d0 <
    3b824930259d54f5047ce6b5c97bd20db2fc2b98
  - >-
    Linux >= 6c07aad8a7c9ef8ebc4d03a964b882123a349a2e <
    c83d6b0a65f7b71bbabcc91c045dfbffdff6ae76
  - >-
    Linux >= eb482a06791d6168beb8c78cc904ac5a5ed96a55 <
    0a7ecf52cb59ed77ec525deb52c496ea8fba10b1
  - >-
    Linux >= 7df3194bdb7479cad9199889655a566a2c0c1d1b <
    812ca56867bec3065c2a27f1ff5ce04e2a8bf4f0
  - >-
    Linux >= b06ebc7fe25a6af4a9f6e4a3d4236a4178ad4b01 <
    9c8b6eff6e7505c128b615d9a1364ef66fa5c18e
  - >-
    Linux >= 459d3a64766f5ca2f1886daeaf24582831a5f5ab <
    221253723dc58bb901c3f27a7659823e63fc598c
  - Linux 9af08677aa57debaca5b57c8045c52a83d3dd376
  - Linux 5a77febac6faf6da40fbb4555f703eeb91b58130
  - Linux >= 6.1.188 < 6.1.189
  - Linux >= 6.6.157 < 6.6.158
  - Linux >= 6.12.109 < 6.12.112
  - Linux >= 6.18.50 < 6.18.54
  - Linux >= 7.2.4 < 7.2.8
  - Linux >= 5.10.270 < 5.11
  - Linux >= 5.15.221 < 5.16
  - Linux 7.3-rc1
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:23.363'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98316'
references:
  - url: 'https://git.kernel.org/stable/c/0a7ecf52cb59ed77ec525deb52c496ea8fba10b1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/221253723dc58bb901c3f27a7659823e63fc598c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3b824930259d54f5047ce6b5c97bd20db2fc2b98'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/812ca56867bec3065c2a27f1ff5ce04e2a8bf4f0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9c8b6eff6e7505c128b615d9a1364ef66fa5c18e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c83d6b0a65f7b71bbabcc91c045dfbffdff6ae76'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T08:50:17.411Z'
---

## Overview

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

ALSA: bcd2000: Fix race between rawmidi and disconnect

Although we tried to fix the potential UAF issues at USB disconnect on
bcd2000 driver, there is still an overlooked case -- namely, when a
rawmidi trigger callback has been already running at USB disconnect
handling, the in-flight function (e.g. bcd2000_midi_send()) could
still access the URB, because the previous URB NULL-check & clearance
was considered only for the URB complete callbacks, but not about the
parallel rawmidi operations.

For addressing the race, this patch introduced a new spinlock that
covers each rawmidi operation as well as the rawmidi handling in the
complete callback.  The URB is cleared with the lock, so it guarantees
that the pending rawmidi task already finished or a NULL check is
effective.

## Remediation

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