Linux Kernel up to 6.12.102/6.18.43/7.1.7 mtk_eth_soc mtk_poll_controller memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.12.102/6.18.43/7.1.7. It has been classified as critical. This issue affects the function mtk_poll_controller of the component mtk_eth_soc. The manipulation leads to memory corruption. This vulnerability is listed as CVE-2026-80694. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.12.102/6.18.43/7.1.7 and classified as critical. This issue affects the function mtk_poll_controller of the component mtk_eth_soc. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. The summary by CVE is:

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.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2026-80694 since 08/26/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/30/2026).

The vulnerability scanner Nessus provides a plugin with the ID 341333 (Linux Distros Unpatched Vulnerability : CVE-2026-80694), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.12.103, 6.18.44 or 7.1.8 eliminates this vulnerability. Applying the patch 3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8/276f1f180f55d56cf5992a581e20ed2b3dfa6ced/7eb46318d53940dab63dea7130e720b67a656104/e095f249e2209674f6366f6db0383a2b96e19239 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (341333) and CERT Bund (WID-SEC-2026-3075). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Open Source Linux Kernel

Productinfo

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Name

Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 341333
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-80694

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.103/6.18.44/7.1.8
Patch: 3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8/276f1f180f55d56cf5992a581e20ed2b3dfa6ced/7eb46318d53940dab63dea7130e720b67a656104/e095f249e2209674f6366f6db0383a2b96e19239

Timelineinfo

08/26/2026 CVE reserved
08/28/2026 +2 days Advisory disclosed
08/28/2026 +0 days VulDB entry created
08/30/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-80694 (🔒)
GCVE (CVE): GCVE-0-2026-80694
GCVE (VulDB): GCVE-100-396653
CERT Bund: WID-SEC-2026-3075 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 08/28/2026 11:07
Updated: 08/30/2026 00:13
Changes: 08/28/2026 11:07 (59), 08/29/2026 04:18 (2), 08/30/2026 00:13 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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