What’s Vulnerable › Vulnerabilities

CVE-2026-80694: net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-28 · updated 2026-10-30

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.

Affected products

• Linux: 4.8 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/276f1f180f55d56cf5992a581e20ed2b3dfa6ced
• https://git.kernel.org/stable/c/3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8
• https://git.kernel.org/stable/c/7eb46318d53940dab63dea7130e720b67a656104
• https://git.kernel.org/stable/c/979a736fcac2ee32b55dafa6766188aa8b6927a4
• https://git.kernel.org/stable/c/a9133c4d335e48ba92f4daed10c506378924f976
• https://git.kernel.org/stable/c/e095f249e2209674f6366f6db0383a2b96e19239

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