---
id: CVE-2026-80812
title: 'ALSA: dummy: Check card index validity at probe'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ALSA: dummy: Check card index validity at probe

  snd_dummy_probe() blindly trusts that the given devptr->id value is
  within the proper card index range.  It's OK for th…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 <
    b7579e86afcec932e169d10e2d603abed8dd2fdf
  - >-
    Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 <
    4d0892a90b57f0e89b274c3f3c51c2fa17937c88
  - >-
    Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 <
    b20eb7ecbdaa3e649023fe41b177d90983ffb487
  - >-
    Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 <
    c9f10a001c243d1f069ebb0e2f4999ad4043a254
  - >-
    Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 <
    f20c2c32ec1c5c3526f29a03b487c55a5890996c
  - >-
    Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 <
    3dba0e92e18980cb5a4d70a9a263539ae4f0c7ec
  - >-
    Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 <
    690b721b9595f9a43395fd4047a832c42b5b6078
  - >-
    Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 <
    02442d5fe8ee365a084b055d4fa81a0c1abfc3fd
  - Linux 2.6.16
published: '2026-09-04'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T08:44:05.644Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-80812'
references:
  - url: 'https://git.kernel.org/stable/c/b7579e86afcec932e169d10e2d603abed8dd2fdf'
  - url: 'https://git.kernel.org/stable/c/4d0892a90b57f0e89b274c3f3c51c2fa17937c88'
  - url: 'https://git.kernel.org/stable/c/b20eb7ecbdaa3e649023fe41b177d90983ffb487'
  - url: 'https://git.kernel.org/stable/c/c9f10a001c243d1f069ebb0e2f4999ad4043a254'
  - url: 'https://git.kernel.org/stable/c/f20c2c32ec1c5c3526f29a03b487c55a5890996c'
  - url: 'https://git.kernel.org/stable/c/3dba0e92e18980cb5a4d70a9a263539ae4f0c7ec'
  - url: 'https://git.kernel.org/stable/c/690b721b9595f9a43395fd4047a832c42b5b6078'
  - url: 'https://git.kernel.org/stable/c/02442d5fe8ee365a084b055d4fa81a0c1abfc3fd'
tags:
  - cve.org
epss: 0.00177
epssPercentile: 0.06751
ingestedAt: '2026-10-19T09:16:01.508Z'
---

## Overview

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

ALSA: dummy: Check card index validity at probe

snd_dummy_probe() blindly trusts that the given devptr->id value is
within the proper card index range.  It's OK for the devices the
driver itself creates at the module probe time, but if the device is
bound manually via sysfs interface, this could be -1 as "none", and
this leads to OOB access for index[] and other parameters.

Add a sanity check for the card index and warn/correct it if it's a
value out of the range.

## Affected

- `Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 < b7579e86afcec932e169d10e2d603abed8dd2fdf`
- `Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 < 4d0892a90b57f0e89b274c3f3c51c2fa17937c88`
- `Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 < b20eb7ecbdaa3e649023fe41b177d90983ffb487`
- `Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 < c9f10a001c243d1f069ebb0e2f4999ad4043a254`
- `Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 < f20c2c32ec1c5c3526f29a03b487c55a5890996c`
- `Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 < 3dba0e92e18980cb5a4d70a9a263539ae4f0c7ec`
- `Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 < 690b721b9595f9a43395fd4047a832c42b5b6078`
- `Linux >= 6e65c1cc4458b2784224759b6137a50d4f65e610 < 02442d5fe8ee365a084b055d4fa81a0c1abfc3fd`
- `Linux 2.6.16`

## Remediation

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