---
id: CVE-2026-64484
title: 'ALSA: es1938: check snd_ctl_new1() return value'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ALSA: es1938: check snd_ctl_new1() return value

  snd_ctl_new1() can return NULL when memory allocation fails.
  snd_es1938_mixer() does not check the return value before …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    96cad5bd7d0a176db3fdc06717a41271247336bd
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    6c4efebaf73e217efbd08cdbda805758a7db3680
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    41759affbcfe3d51a32900da9547a1ffd744a85f
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    7531a37720c2545a480fd0fa464978569bf9d6a2
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    af01c48e17a66fa038af210a5c49d6cdefd210bd
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    9e53e99b6fa3cd82992d963cbff58dbbd1df8651
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    1949163dee39e0e4a1468f37dd7302962f6af45a
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    1edd1f02dddd20aeb6066ded41017615766ea42f
  - Linux 2.6.12
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:40:10.204634Z'
published: '2026-07-25'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:44:55.187Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-64484'
references:
  - url: 'https://git.kernel.org/stable/c/96cad5bd7d0a176db3fdc06717a41271247336bd'
  - url: 'https://git.kernel.org/stable/c/6c4efebaf73e217efbd08cdbda805758a7db3680'
  - url: 'https://git.kernel.org/stable/c/41759affbcfe3d51a32900da9547a1ffd744a85f'
  - url: 'https://git.kernel.org/stable/c/7531a37720c2545a480fd0fa464978569bf9d6a2'
  - url: 'https://git.kernel.org/stable/c/af01c48e17a66fa038af210a5c49d6cdefd210bd'
  - url: 'https://git.kernel.org/stable/c/9e53e99b6fa3cd82992d963cbff58dbbd1df8651'
  - url: 'https://git.kernel.org/stable/c/1949163dee39e0e4a1468f37dd7302962f6af45a'
  - url: 'https://git.kernel.org/stable/c/1edd1f02dddd20aeb6066ded41017615766ea42f'
tags:
  - cve.org
epss: 0.00185
epssPercentile: 0.08155
ingestedAt: '2026-11-06T16:57:43.163Z'
---

## Overview

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

ALSA: es1938: check snd_ctl_new1() return value

snd_ctl_new1() can return NULL when memory allocation fails.
snd_es1938_mixer() does not check the return value before dereferencing
the pointer, which can lead to a NULL pointer dereference.

Add a NULL check after snd_ctl_new1() and return -ENOMEM if it fails.

## Affected

- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 96cad5bd7d0a176db3fdc06717a41271247336bd`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6c4efebaf73e217efbd08cdbda805758a7db3680`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 41759affbcfe3d51a32900da9547a1ffd744a85f`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7531a37720c2545a480fd0fa464978569bf9d6a2`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < af01c48e17a66fa038af210a5c49d6cdefd210bd`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9e53e99b6fa3cd82992d963cbff58dbbd1df8651`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1949163dee39e0e4a1468f37dd7302962f6af45a`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1edd1f02dddd20aeb6066ded41017615766ea42f`
- `Linux 2.6.12`

## Remediation

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