firmware: arm_scmi: Clean up channels on setup failure (CVE-2026-93090) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-93090

firmware: arm_scmi: Clean up channels on setup failure

Answer in brief

CVE-2026-93090 records a Unknown severity vulnerability in firmware: arm_scmi: Clean up channels on setup failure. 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 17, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Sep 17, 2026Material review Sep 17, 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	>=05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 <b8479e1f0219cf18bfdfeca97994e563a0afb602 \|\| >=05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 <d33b2b68bce6d5e28ee77f0952d7f3dc82bbe610 \|\| >=05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 <43aad7687238d6178cb3fdac53c8de3f43bfa028 \|\| >=05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1 <687d67be3d87894ef12e8a164434612e0b53cfae	b8479e1f0219cf18bfdfeca97994e563a0afb602, d33b2b68bce6d5e28ee77f0952d7f3dc82bbe610, 43aad7687238d6178cb3fdac53c8de3f43bfa028, 687d67be3d87894ef12e8a164434612e0b53cfae
Linux/Linuxgeneric	6.3	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to b8479e1f0219cf18bfdfeca97994e563a0afb602 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

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

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Clean up channels on setup failure scmi_channels_setup() can fail after the common BASE channel or earlier protocol channels have already been registered in the TX/RX IDRs. Route this failure through the existing channel cleanup label so the transport channels, transport devices and IDR state created before the failure are released before the probe error path frees the SCMI instance ID.

Quoted source text, attributed separately from HOL analysis.