Vulnerability-Lookup

CVE-2026-80694 (GCVE-0-2026-80694)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:53 – Updated: 2026-08-29 06:22

Title

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

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.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/3bd58ac9ca0c55265…
https://git.kernel.org/stable/c/276f1f180f55d56cf…
https://git.kernel.org/stable/c/7eb46318d53940dab…
https://git.kernel.org/stable/c/e095f249e2209674f…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 , < 3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8 (git) Affected: 8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 , < 276f1f180f55d56cf5992a581e20ed2b3dfa6ced (git) Affected: 8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 , < 7eb46318d53940dab63dea7130e720b67a656104 (git) Affected: 8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 , < e095f249e2209674f6366f6db0383a2b96e19239 (git)	guessed
Linux	Linux	Affected: 4.8 Unaffected: 0 , < 4.8 (semver) Unaffected: 6.12.103 , ≤ 6.12.* (semver) Unaffected: 6.18.44 , ≤ 6.18.* (semver) Unaffected: 7.1.8 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mediatek/mtk_eth_soc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
            {
              "lessThan": "276f1f180f55d56cf5992a581e20ed2b3dfa6ced",
              "status": "affected",
              "version": "8186f6e382d8719d0a4bc0ef218c4dd7cf55b496",
              "versionType": "git"
            },
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.8"
            },
            {
              "lessThan": "4.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "version": "6.12.103",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18.44",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "7.1.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.103",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
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              "operator": "OR"
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller\n\nmtk_handle_irq_rx expects a struct mtk_eth * (matching the request_irq\ncookie), but mtk_poll_controller incorrectly passed the net_device *.\nCalling ndo_poll_controller with CONFIG_NET_POLL_CONTROLLER enabled\nwould then crash."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The bug is only reachable via ndo_poll_controller called from netpoll during netconsole transmit polling on the mtk netdev; on MediaTek routers/gateways with netconsole on the primary ethernet interface, remote network traffic that triggers kernel logging and netpoll send retries can invoke the corrupt path without local access.\nAC:L - Once netconsole is bound to the mtk interface, netpoll_poll_dev calls mtk_poll_controller deterministically during log transmission and skb allocation retries, without races or attacker-dependent timing beyond routine network activity.\nPR:N - Exploitation requires no attacker credentials or capabilities; only an administrator-preconfigured netconsole target on the mtk netdev (an environmental prerequisite), after which any unprivileged remote party can trigger the path by causing kernel log emission.\nUI:N - No victim user action is required beyond normal system operation; triggering relies on automated kernel logging and netpoll activity, not on a user opening files, mounting filesystems, or interacting with the UI.\nS:U - Impact is confined to kernel memory corruption and crash within the same kernel security authority; this is not a VM escape, sandbox breakout, or cross-authority boundary violation.\nC:H - Casting net_device to mtk_eth causes reads of attacker-influenced adjacent memory through napi_schedule_prep and potential MMIO via a misinterpreted soc/base pointer, constituting exploitable type confusion rather than a bounded NULL dereference.\nI:H - The mistyped pointer causes an unconditional increment at the mtk_eth rx_events offset (writing into net_device/adjacent heap memory) and may corrupt or schedule a bogus NAPI structure, giving memory corruption primitives.\nA:H - The fix commit and handler logic confirm the mistyped pointer leads to invalid structure access and likely kernel oops/panic when netpoll_controller is invoked, causing complete loss of availability on affected devices."
            }
          ]
        }
      ],
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        "dateUpdated": "2026-08-29T06:22:18.328Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8"
        },
        {
          "url": "https://git.kernel.org/stable/c/276f1f180f55d56cf5992a581e20ed2b3dfa6ced"
        },
        {
          "url": "https://git.kernel.org/stable/c/7eb46318d53940dab63dea7130e720b67a656104"
        },
        {
          "url": "https://git.kernel.org/stable/c/e095f249e2209674f6366f6db0383a2b96e19239"
        }
      ],
      "title": "net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80694",
    "datePublished": "2026-08-28T06:53:00.442Z",
    "dateReserved": "2026-08-26T14:34:25.785Z",
    "dateUpdated": "2026-08-29T06:22:18.328Z",
    "state": "PUBLISHED"
  },
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  }
}

FKIE_CVE-2026-80694

Vulnerability from fkie_nvd - Published: 2026-08-28 08:16 - Updated: 2026-08-29 07:16

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/276f1f180f55d56cf5992a581e20ed2b3dfa6ced
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7eb46318d53940dab63dea7130e720b67a656104
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e095f249e2209674f6366f6db0383a2b96e19239

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mediatek/mtk_eth_soc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8",
              "status": "affected",
              "version": "8186f6e382d8719d0a4bc0ef218c4dd7cf55b496",
              "versionType": "git"
            },
            {
              "lessThan": "276f1f180f55d56cf5992a581e20ed2b3dfa6ced",
              "status": "affected",
              "version": "8186f6e382d8719d0a4bc0ef218c4dd7cf55b496",
              "versionType": "git"
            },
            {
              "lessThan": "7eb46318d53940dab63dea7130e720b67a656104",
              "status": "affected",
              "version": "8186f6e382d8719d0a4bc0ef218c4dd7cf55b496",
              "versionType": "git"
            },
            {
              "lessThan": "e095f249e2209674f6366f6db0383a2b96e19239",
              "status": "affected",
              "version": "8186f6e382d8719d0a4bc0ef218c4dd7cf55b496",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mediatek/mtk_eth_soc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.8"
            },
            {
              "lessThan": "4.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller\n\nmtk_handle_irq_rx expects a struct mtk_eth * (matching the request_irq\ncookie), but mtk_poll_controller incorrectly passed the net_device *.\nCalling ndo_poll_controller with CONFIG_NET_POLL_CONTROLLER enabled\nwould then crash."
    }
  ],
  "id": "CVE-2026-80694",
  "lastModified": "2026-08-29T07:16:51.580",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-08-28T08:16:54.883",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/276f1f180f55d56cf5992a581e20ed2b3dfa6ced"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7eb46318d53940dab63dea7130e720b67a656104"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e095f249e2209674f6366f6db0383a2b96e19239"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-55J9-P2QJ-GVRC

Vulnerability from github – Published: 2026-08-28 09:31 – Updated: 2026-08-29 09:30

Details

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.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-80694"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-28T08:16:54Z",
    "severity": "CRITICAL"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller\n\nmtk_handle_irq_rx expects a struct mtk_eth * (matching the request_irq\ncookie), but mtk_poll_controller incorrectly passed the net_device *.\nCalling ndo_poll_controller with CONFIG_NET_POLL_CONTROLLER enabled\nwould then crash.",
  "id": "GHSA-55j9-p2qj-gvrc",
  "modified": "2026-08-29T09:30:28Z",
  "published": "2026-08-28T09:31:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80694"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/276f1f180f55d56cf5992a581e20ed2b3dfa6ced"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7eb46318d53940dab63dea7130e720b67a656104"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e095f249e2209674f6366f6db0383a2b96e19239"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-80694 (GCVE-0-2026-80694)

FKIE_CVE-2026-80694

GHSA-55J9-P2QJ-GVRC

Tags

Sightings

Nomenclature