---
id: CVE-2026-72302
title: 'ASoC: SOF: ipc3-control: Use overflow checks in control_update size calc'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ASoC: SOF: ipc3-control: Use overflow checks in control_update size calc

  In sof_ipc3_control_update(), the expected_size calculation uses
  firmware-provided cdata->num_…
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 <
    6856b3c23b0995eefad5a6142b4365ef70e1fe4a
  - >-
    Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e <
    89a2309a9eec80d4c19e3aed62c4f923594d1911
  - >-
    Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e <
    ffd79e77f2fbacd7a5d40ad1d4c7f3f089a8f2f3
  - >-
    Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e <
    711d912b18763af62a63aa8f2419a774eb63bba4
  - >-
    Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e <
    312c7d2ebe696da3f885eee77d52297664e57c53
  - >-
    Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e <
    8791977d7289f6e9d2b014f60a5455f053a7bc04
  - Linux 5.18
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T18:46:13.914828Z'
published: '2026-08-15'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T18:55:16.199Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-72302'
references:
  - url: 'https://git.kernel.org/stable/c/6856b3c23b0995eefad5a6142b4365ef70e1fe4a'
  - url: 'https://git.kernel.org/stable/c/89a2309a9eec80d4c19e3aed62c4f923594d1911'
  - url: 'https://git.kernel.org/stable/c/ffd79e77f2fbacd7a5d40ad1d4c7f3f089a8f2f3'
  - url: 'https://git.kernel.org/stable/c/711d912b18763af62a63aa8f2419a774eb63bba4'
  - url: 'https://git.kernel.org/stable/c/312c7d2ebe696da3f885eee77d52297664e57c53'
  - url: 'https://git.kernel.org/stable/c/8791977d7289f6e9d2b014f60a5455f053a7bc04'
tags:
  - cve.org
epss: 0.00177
epssPercentile: 0.06836
ingestedAt: '2026-10-16T19:46:24.411Z'
---

## Overview

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

ASoC: SOF: ipc3-control: Use overflow checks in control_update size calc

In sof_ipc3_control_update(), the expected_size calculation uses
firmware-provided cdata->num_elems in arithmetic that could overflow
on 32-bit platforms, wrapping to a small value. This would allow the
cdata->rhdr.hdr.size comparison to pass with mismatched sizes,
potentially leading to out-of-bounds access in snd_sof_update_control.

Use check_mul_overflow() and check_add_overflow() to detect and reject
overflowed size calculations.

## Affected

- `Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e < 6856b3c23b0995eefad5a6142b4365ef70e1fe4a`
- `Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e < 89a2309a9eec80d4c19e3aed62c4f923594d1911`
- `Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e < ffd79e77f2fbacd7a5d40ad1d4c7f3f089a8f2f3`
- `Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e < 711d912b18763af62a63aa8f2419a774eb63bba4`
- `Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e < 312c7d2ebe696da3f885eee77d52297664e57c53`
- `Linux >= 10f461d79c2d1afb22344986cc1b4631169cf25e < 8791977d7289f6e9d2b014f60a5455f053a7bc04`
- `Linux 5.18`

## Remediation

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