Drivers: hv: vmbus: use generic driver_override infrastructure (CVE-2026-80676) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80676

Drivers: hv: vmbus: use generic driver_override infrastructure

Answer in brief

CVE-2026-80676 records a Unknown severity vulnerability in Drivers: hv: vmbus: use generic driver_override infrastructure. 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 28, 2026Updated Aug 28, 2026Source checked Aug 28, 2026First seen by HOL Aug 28, 2026Material review Aug 28, 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	>=d765edbb301c0e196015a59b17420558088ea33f <d1cb12ae81d2f7a58b0b1cfb51862afca98e6058 \|\| >=d765edbb301c0e196015a59b17420558088ea33f <0e2f0833556c8c5269deb457b89d538644a3b747 \|\| >=d765edbb301c0e196015a59b17420558088ea33f <2fb010ea7ca98cd09a6d365260b769f627e73a76 \|\| >=d765edbb301c0e196015a59b17420558088ea33f <331d8900121a1d74ecd45cd2db742ddcb5a0a565	d1cb12ae81d2f7a58b0b1cfb51862afca98e6058, 0e2f0833556c8c5269deb457b89d538644a3b747, 2fb010ea7ca98cd09a6d365260b769f627e73a76, 331d8900121a1d74ecd45cd2db742ddcb5a0a565
Linux/Linuxgeneric	4.20	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to d1cb12ae81d2f7a58b0b1cfb51862afca98e6058 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 28, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: use generic driver_override infrastructure When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1]

Quoted source text, attributed separately from HOL analysis.