accel: ethosu: Fix element size accounting for cmd stream validation (CVE-2026-68316) | HOL Guard CVE

High · CVSS 7.8CVE-2026-68316

accel: ethosu: Fix element size accounting for cmd stream validation

Answer in brief

CVE-2026-68316 records a High severity (CVSS 7.8) vulnerability in accel: ethosu: Fix element size accounting for cmd stream validation. 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 10, 2026Updated Aug 17, 2026Source checked Sep 25, 2026First seen by HOL Aug 10, 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	>=5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b <b4ae748f8e6cb65bb86e5a281bbb5b5e5f106527 \|\| >=5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b <18a551482a4a326790698b273e76d7575a51a57d	b4ae748f8e6cb65bb86e5a281bbb5b5e5f106527, 18a551482a4a326790698b273e76d7575a51a57d
Linux/Linuxgeneric	6.19	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to b4ae748f8e6cb65bb86e5a281bbb5b5e5f106527 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 10, 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 10, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: accel: ethosu: Fix element size accounting for cmd stream validation There are 2 issues with the element size handling in the command stream validation which result in too small of a size calculated when the element size is 16/32/64 bits. For NHWC format, the element size is simply missing from the calculation. The bitfield for the element size is different between IFM/IFM2 and OFM. IFM and IFM2 encode the precision in parameter bits 2:3, while OFM uses bits 1:2.

Quoted source text, attributed separately from HOL analysis.