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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-72301
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:02 UTC
Updated2026-08-17 06:18:33 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001640000 probability, percentile 0.060790000 (date 2026-08-17)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 544ac8858f249950b4d99c68e538cdc07300528f 8bd715a9d882fe1993bb2aec5eff89fffa946592 git Not specified
CNA Linux Linux affected 544ac8858f249950b4d99c68e538cdc07300528f 0dce240145f47545d2e4b18c6d58033b83e1fd0e git Not specified
CNA Linux Linux affected 544ac8858f249950b4d99c68e538cdc07300528f ed4f758f34be4c32e02933ac4fa044589d9c1c16 git Not specified
CNA Linux Linux affected 544ac8858f249950b4d99c68e538cdc07300528f 0c4fbdaca225b97122b61b68c5353caa33a253c3 git Not specified
CNA Linux Linux affected 544ac8858f249950b4d99c68e538cdc07300528f 92f90917413bdd6078fefff6f6c83a07bf870b04 git Not specified
CNA Linux Linux affected 544ac8858f249950b4d99c68e538cdc07300528f 1f97760417b5faa60e9642fd0ed61eb17d0b1b39 git Not specified
CNA Linux Linux affected 5.18 Not specified
CNA Linux Linux unaffected 5.18 semver Not specified
CNA Linux Linux unaffected 6.1.178 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.97 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/1f97760417b5faa60e9642fd0ed61eb17d0b1b39 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8bd715a9d882fe1993bb2aec5eff89fffa946592 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ed4f758f34be4c32e02933ac4fa044589d9c1c16 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0dce240145f47545d2e4b18c6d58033b83e1fd0e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/92f90917413bdd6078fefff6f6c83a07bf870b04 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0c4fbdaca225b97122b61b68c5353caa33a253c3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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