wifi: mt76: mt7915: release hif2 reference on probe IRQ failure (CVE-2026-90352) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90352

wifi: mt76: mt7915: release hif2 reference on probe IRQ failure

Answer in brief

CVE-2026-90352 records a Unknown severity vulnerability in wifi: mt76: mt7915: release hif2 reference on probe IRQ 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	>=f68d67623dec9445960b52a0e9e8e60297596b4b <8a2e38019846da29a112fac4dd96fe5bfa298faf \|\| >=f68d67623dec9445960b52a0e9e8e60297596b4b <2a434d2637b9c9be9bcc8a84dc46880cc1446643 \|\| >=f68d67623dec9445960b52a0e9e8e60297596b4b <5c30a6350a300fbb800831f1b4373b2f59e03410 \|\| >=f68d67623dec9445960b52a0e9e8e60297596b4b <ed5cc46a3c8f4fe7f549c661914d8d835169acc0 \|\| >=f68d67623dec9445960b52a0e9e8e60297596b4b <fb9c7b4c238b4e5469a11a1fb8cf332f6193b995 \|\| >=f68d67623dec9445960b52a0e9e8e60297596b4b <8370aebd26a9dfa2e0de665e3ab504c0e97ee730	8a2e38019846da29a112fac4dd96fe5bfa298faf, 2a434d2637b9c9be9bcc8a84dc46880cc1446643, 5c30a6350a300fbb800831f1b4373b2f59e03410, ed5cc46a3c8f4fe7f549c661914d8d835169acc0, fb9c7b4c238b4e5469a11a1fb8cf332f6193b995, 8370aebd26a9dfa2e0de665e3ab504c0e97ee730
Linux/Linuxgeneric	5.19	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 8a2e38019846da29a112fac4dd96fe5bfa298faf 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: wifi: mt76: mt7915: release hif2 reference on probe IRQ failure The hif2 reference obtained by mt7915_pci_init_hif2() is only released on error paths that key off dev->hif2, which is not assigned until after the IRQ setup. If pci_alloc_irq_vectors() or the primary devm_request_irq() fails, the reference leaks. Drop it explicitly on those paths via mt7915_put_hif2().

Quoted source text, attributed separately from HOL analysis.