ASoC: SOF: ipc4-control: Fix TOCTOU in sof_ipc4_bytes_put (CVE-2026-72304) | HOL Guard CVE

High · CVSS 7.8CVE-2026-72304

ASoC: SOF: ipc4-control: Fix TOCTOU in sof_ipc4_bytes_put

Answer in brief

CVE-2026-72304 records a High severity (CVSS 7.8) vulnerability in ASoC: SOF: ipc4-control: Fix TOCTOU in sof_ipc4_bytes_put. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 15, 2026Updated Aug 17, 2026Source checked Sep 29, 2026First seen by HOL Aug 15, 2026Material review Aug 17, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=a062c8899fede2ab5660a817e9b602d3fa280a99 <266f936db83aee6ca6473bbb06259bda52bf4fc3 \|\| >=a062c8899fede2ab5660a817e9b602d3fa280a99 <4cf6a7ebbf8787393b158b2cc341723e5bebc4a8 \|\| >=a062c8899fede2ab5660a817e9b602d3fa280a99 <fb4293173db2d474d8fbc0e5ecf4943e6df2b40e \|\| >=a062c8899fede2ab5660a817e9b602d3fa280a99 <038406abde0d0883419ec89425ea941ec8bbef95 \|\| >=a062c8899fede2ab5660a817e9b602d3fa280a99 <3ad673e7139cf214afd24321a829aad6575f4163	266f936db83aee6ca6473bbb06259bda52bf4fc3, 4cf6a7ebbf8787393b158b2cc341723e5bebc4a8, fb4293173db2d474d8fbc0e5ecf4943e6df2b40e, 038406abde0d0883419ec89425ea941ec8bbef95, 3ad673e7139cf214afd24321a829aad6575f4163
Linux/Linuxgeneric	6.4	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 266f936db83aee6ca6473bbb06259bda52bf4fc3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 15, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: ipc4-control: Fix TOCTOU in sof_ipc4_bytes_put In sof_ipc4_bytes_put(), the copy size is derived from the old data->size in the buffer rather than the incoming new data's size field from ucontrol. If the new data has a different size, the copy uses the wrong length: it may truncate valid data or copy stale bytes. Fix by validating and using the incoming data's sof_abi_hdr.size from ucontrol before copying.

Quoted source text, attributed separately from HOL analysis.