net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.103, 6.18.44, 7.1.8, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-80694
- 2026-10-03 Alias added: GHSA-55j9-p2qj-gvrc
- 2026-10-21 Fix available: Linux/[email protected], Linux/Linux@a9133c4d335e48ba92f4daed10c506378924f976 · CNA
- 2026-10-21 1 new reference · CNA
- 2026-10-23 EPSS moved to the below the 50th percentile
- 2026-10-30 Fix available: Linux/[email protected], Linux/Linux@979a736fcac2ee32b55dafa6766188aa8b6927a4 · CNA
- 2026-10-30 1 new reference · CNA
References
Other 6
- https://git.kernel.org/stable/c/979a736fcac2ee32b55dafa6766188aa8b6927a4
- https://git.kernel.org/stable/c/a9133c4d335e48ba92f4daed10c506378924f976
- https://git.kernel.org/stable/c/3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8
- https://git.kernel.org/stable/c/276f1f180f55d56cf5992a581e20ed2b3dfa6ced
- https://git.kernel.org/stable/c/7eb46318d53940dab63dea7130e720b67a656104
- https://git.kernel.org/stable/c/e095f249e2209674f6366f6db0383a2b96e19239
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Sources
- CVE-2026-80694 · CVE Program
- CVE-2026-80694 · NVD
- FIRST EPSS
- GHSA-55j9-p2qj-gvrc · GitHub Advisory Database · CC BY 4.0
- CVE-2026-80694 · Red Hat security data · CC BY 4.0
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