ASoC: SOF: ipc3-control: Fix TOCTOU in bytes_put and bytes_get (CVE-2026-72301) | HOL Guard CVE

High · CVSS 7.8CVE-2026-72301

ASoC: SOF: ipc3-control: Fix TOCTOU in bytes_put and bytes_get

Answer in brief

CVE-2026-72301 records a High severity (CVSS 7.8) vulnerability in ASoC: SOF: ipc3-control: Fix TOCTOU in bytes_put and bytes_get. 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	>=544ac8858f249950b4d99c68e538cdc07300528f <8bd715a9d882fe1993bb2aec5eff89fffa946592 \|\| >=544ac8858f249950b4d99c68e538cdc07300528f <0dce240145f47545d2e4b18c6d58033b83e1fd0e \|\| >=544ac8858f249950b4d99c68e538cdc07300528f <ed4f758f34be4c32e02933ac4fa044589d9c1c16 \|\| >=544ac8858f249950b4d99c68e538cdc07300528f <0c4fbdaca225b97122b61b68c5353caa33a253c3 \|\| >=544ac8858f249950b4d99c68e538cdc07300528f <92f90917413bdd6078fefff6f6c83a07bf870b04 \|\| >=544ac8858f249950b4d99c68e538cdc07300528f <1f97760417b5faa60e9642fd0ed61eb17d0b1b39	8bd715a9d882fe1993bb2aec5eff89fffa946592, 0dce240145f47545d2e4b18c6d58033b83e1fd0e, ed4f758f34be4c32e02933ac4fa044589d9c1c16, 0c4fbdaca225b97122b61b68c5353caa33a253c3, 92f90917413bdd6078fefff6f6c83a07bf870b04, 1f97760417b5faa60e9642fd0ed61eb17d0b1b39
Linux/Linuxgeneric	5.18	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 8bd715a9d882fe1993bb2aec5eff89fffa946592 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: ipc3-control: Fix TOCTOU in bytes_put and bytes_get In sof_ipc3_bytes_put(), the size used for the memcpy is derived from the old data->size already in the buffer, not the incoming new data's size field. If the new data has a different size, the copy length is wrong: it may truncate valid data or copy stale bytes. Similarly, sof_ipc3_bytes_get() checks data->size against max_size without accounting for the sizeof(struct sof_ipc_ctrl_data) offset of the flex array within the allocation. Fix bytes_put to validate and use the incoming data's sof_abi_hdr.size from ucontrol before copying. Fix bytes_get to subtract sizeof(*cdata) from the bounds check to match the actual available space.

Quoted source text, attributed separately from HOL analysis.