net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller (CVE-2026-80694) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80694

net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller

Answer in brief

CVE-2026-80694 records a Unknown severity vulnerability in net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller. 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	>=8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 <3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8 \|\| >=8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 <276f1f180f55d56cf5992a581e20ed2b3dfa6ced \|\| >=8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 <7eb46318d53940dab63dea7130e720b67a656104 \|\| >=8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 <e095f249e2209674f6366f6db0383a2b96e19239	3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8, 276f1f180f55d56cf5992a581e20ed2b3dfa6ced, 7eb46318d53940dab63dea7130e720b67a656104, e095f249e2209674f6366f6db0383a2b96e19239
Linux/Linuxgeneric	4.8	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8 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: net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller mtk_handle_irq_rx expects a struct mtk_eth * (matching the request_irq cookie), but mtk_poll_controller incorrectly passed the net_device *. Calling ndo_poll_controller with CONFIG_NET_POLL_CONTROLLER enabled would then crash.

Quoted source text, attributed separately from HOL analysis.