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Linux Kernel CVE-2026-80694

| EUVDEUVD-2026-67429 CRITICAL
2026-08-28 Linux GHSA-55j9-p2qj-gvrc
Denial Of Service Linux Red Hat Suse
Critical
Disputed · 9.8 Vendor: Linux
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Severity by source

Sources disagree (Medium–Critical)
Vendor (Linux) PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
4.4 MEDIUM

Crash reachable only via admin-enabled netpoll/CONFIG_NET_POLL_CONTROLLER on MediaTek hardware, so AV:L and PR:H; availability-only impact (A:H), no C/I effect.

3.1 AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
4.0 AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
CRITICAL
qualitative
Red Hat
5.5 MEDIUM
qualitative

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorVendor: Linux

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

5
Analysis Generated
Aug 29, 2026 - 08:04 vuln.today
CVSS changed
Aug 29, 2026 - 07:22 NVD
9.8 (CRITICAL)
Patch available
Aug 28, 2026 - 09:02 EUVD
CVE Published
Aug 28, 2026 - 06:53 cve.org
UNKNOWN (no severity yet)
CVE Published
Aug 28, 2026 - 06:53 cve.org
CRITICAL 9.8

DescriptionCVE.org

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.

AnalysisAI

Denial of service in the Linux kernel's MediaTek mtk_eth_soc Ethernet driver: mtk_poll_controller() passed a net_device pointer to mtk_handle_irq_rx(), which expects a struct mtk_eth pointer (the value registered as the request_irq cookie). When CONFIG_NET_POLL_CONTROLLER is enabled and the ndo_poll_controller path is exercised (e.g. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Exploit
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Execution
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Vulnerability AssessmentAI

Exploitation Requires the affected system to run the MediaTek mtk_eth_soc Ethernet driver AND have CONFIG_NET_POLL_CONTROLLER compiled in, and for the ndo_poll_controller/netpoll path to be exercised (e.g. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The provided CVSS 9.8 vector (AV:N/AC:L/PR:N/UI:N/C:H/I:H/A:H) is not credible for this defect and should be treated as an auto-generated placeholder: the description describes a kernel crash reachable only through the ndo_poll_controller code path, not a network-triggerable memory-corruption primitive, so confidentiality and integrity impact are effectively nil and the vector is local rather than network. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Patch available per vendor advisory: update to a fixed stable kernel - 6.12.103, 6.18.44, 7.1.8, or 7.2 (or later in each series), corresponding to git.kernel.org stable commits 3bd58ac9ca0c, 276f1f180f55, 7eb46318d539 and e095f249e220. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, identify all systems using MediaTek SoC Ethernet drivers (typically embedded and IoT infrastructure) and verify patch availability for your Linux kernel versions. …

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Same technique Denial Of Service

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Vendor StatusVendor

SUSE

Severity: Critical
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Availability Extension 15 SP7 Affected
SUSE Linux Enterprise High Availability Extension 15 SP7 Affected
SUSE Linux Enterprise High Availability Extension 16.0 Affected

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CVE-2026-80694 vulnerability details – vuln.today
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