accel/ethosu: check MMIO mapping errors in probe (CVE-2026-89977) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-89977

accel/ethosu: check MMIO mapping errors in probe

Answer in brief

CVE-2026-89977 records a Unknown severity vulnerability in accel/ethosu: check MMIO mapping errors in probe. 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 Sep 16, 2026Updated Sep 16, 2026Source checked Sep 16, 2026First seen by HOL Sep 16, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. 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 <f7aad73b481194e3f0efba9688e9a5914bbd036b \|\| >=5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b <7ab64476a610fe65858fdc37c7a30caa13e334ac	f7aad73b481194e3f0efba9688e9a5914bbd036b, 7ab64476a610fe65858fdc37c7a30caa13e334ac
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 f7aad73b481194e3f0efba9688e9a5914bbd036b if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 16, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: accel/ethosu: check MMIO mapping errors in probe devm_platform_ioremap_resource() returns an error pointer when the register resource cannot be mapped. ethosu_probe() stores it and continues until initialization dereferences it through MMIO accessors. Return the mapping error before initializing the device.

Quoted source text, attributed separately from HOL analysis.