---
id: CVE-2026-72261
title: 'ASoC: SOF: ipc3-control: Validate size in snd_sof_update_control'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ASoC: SOF: ipc3-control: Validate size in snd_sof_update_control

  In snd_sof_update_control(), firmware-provided cdata->num_elems is
  checked against local_cdata->data->…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e <
    1dc25a3e06364f48c4ef06016852f8b82425151a
  - >-
    Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e <
    ee781058cd4d71e4449f41cbe6a3b8c59daa2c51
  - >-
    Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e <
    ecf67f1302f2080b4d241b973364aacda70ad740
  - >-
    Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e <
    d3abaedf6a58469610136d2dace1a85cddf7afcf
  - >-
    Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e <
    2a591bf6fd41fd14bdae689aafac4a9ee702c23c
  - >-
    Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e <
    390aa4c9339bb0ec0bc8d554e830faf93ca9d49e
  - Linux 5.18
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T18:45:28.490975Z'
published: '2026-08-15'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T18:55:13.974Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-72261'
references:
  - url: 'https://git.kernel.org/stable/c/1dc25a3e06364f48c4ef06016852f8b82425151a'
  - url: 'https://git.kernel.org/stable/c/ee781058cd4d71e4449f41cbe6a3b8c59daa2c51'
  - url: 'https://git.kernel.org/stable/c/ecf67f1302f2080b4d241b973364aacda70ad740'
  - url: 'https://git.kernel.org/stable/c/d3abaedf6a58469610136d2dace1a85cddf7afcf'
  - url: 'https://git.kernel.org/stable/c/2a591bf6fd41fd14bdae689aafac4a9ee702c23c'
  - url: 'https://git.kernel.org/stable/c/390aa4c9339bb0ec0bc8d554e830faf93ca9d49e'
tags:
  - cve.org
epss: 0.00169
epssPercentile: 0.05794
ingestedAt: '2026-10-16T19:46:24.414Z'
---

## Overview

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

ASoC: SOF: ipc3-control: Validate size in snd_sof_update_control

In snd_sof_update_control(), firmware-provided cdata->num_elems is
checked against local_cdata->data->size but never against the actual
allocation size. If local_cdata->data->size was previously set to an
inconsistent value, the memcpy could write past the allocated buffer.

Add a bounds check to ensure num_elems fits within the available space
in the ipc_control_data allocation before copying.

## Affected

- `Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e < 1dc25a3e06364f48c4ef06016852f8b82425151a`
- `Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e < ee781058cd4d71e4449f41cbe6a3b8c59daa2c51`
- `Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e < ecf67f1302f2080b4d241b973364aacda70ad740`
- `Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e < d3abaedf6a58469610136d2dace1a85cddf7afcf`
- `Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e < 2a591bf6fd41fd14bdae689aafac4a9ee702c23c`
- `Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e < 390aa4c9339bb0ec0bc8d554e830faf93ca9d49e`
- `Linux 5.18`

## Remediation

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