Vulnerability-Lookup

FKIE_CVE-2026-80937

Vulnerability from fkie_nvd - Published: 2026-09-11 20:18 - Updated: 2026-09-13 07:17

Severity

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

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: bound the device EEPROM address before the EFUSE copy mt7915_mcu_get_eeprom() copies a fixed EFUSE block into the driver's dev->mt76.eeprom.data buffer at the offset reported by the MCU response (res->addr, a device-controlled __le32) without checking it against the buffer size. A malicious or malfunctioning device can report an arbitrary address and drive a 16-byte out-of-bounds write past eeprom.data. Reject a response whose address would place the copy outside eeprom.data before deriving the destination pointer. Devices that echo the requested in-bounds offset are unaffected.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/44b5adfe49499f53002737f5fe81d608c08122fc
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5f48b0d752a76590e2c613aae5345c2474627d1b
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5fdaf7016d7684ef756a229fd5d96b4a140eeb40

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7915/mcu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5fdaf7016d7684ef756a229fd5d96b4a140eeb40",
              "status": "affected",
              "version": "e57b7901469fc0b021930b83a8094baaf3d81b09",
              "versionType": "git"
            },
            {
              "lessThan": "5f48b0d752a76590e2c613aae5345c2474627d1b",
              "status": "affected",
              "version": "e57b7901469fc0b021930b83a8094baaf3d81b09",
              "versionType": "git"
            },
            {
              "lessThan": "44b5adfe49499f53002737f5fe81d608c08122fc",
              "status": "affected",
              "version": "e57b7901469fc0b021930b83a8094baaf3d81b09",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7915/mcu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.8"
            },
            {
              "lessThan": "5.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "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\nwifi: mt76: mt7915: bound the device EEPROM address before the EFUSE copy\n\nmt7915_mcu_get_eeprom() copies a fixed EFUSE block into the driver\u0027s\ndev-\u003emt76.eeprom.data buffer at the offset reported by the MCU response\n(res-\u003eaddr, a device-controlled __le32) without checking it against the\nbuffer size. A malicious or malfunctioning device can report an arbitrary\naddress and drive a 16-byte out-of-bounds write past eeprom.data.\n\nReject a response whose address would place the copy outside eeprom.data\nbefore deriving the destination pointer. Devices that echo the requested\nin-bounds offset are unaffected."
    }
  ],
  "id": "CVE-2026-80937",
  "lastModified": "2026-09-13T07:17:01.423",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-11T20:18:57.627",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/44b5adfe49499f53002737f5fe81d608c08122fc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5f48b0d752a76590e2c613aae5345c2474627d1b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5fdaf7016d7684ef756a229fd5d96b4a140eeb40"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-80937 (GCVE-0-2026-80937)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:42 – Updated: 2026-09-13 06:28

Title

wifi: mt76: mt7915: bound the device EEPROM address before the EFUSE copy

Summary

Severity

8.8 (High)


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

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/5fdaf7016d7684ef7…
https://git.kernel.org/stable/c/5f48b0d752a76590e…
https://git.kernel.org/stable/c/44b5adfe49499f530…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e57b7901469fc0b021930b83a8094baaf3d81b09 , < 5fdaf7016d7684ef756a229fd5d96b4a140eeb40 (git) Affected: e57b7901469fc0b021930b83a8094baaf3d81b09 , < 5f48b0d752a76590e2c613aae5345c2474627d1b (git) Affected: e57b7901469fc0b021930b83a8094baaf3d81b09 , < 44b5adfe49499f53002737f5fe81d608c08122fc (git)
Linux	Linux	Affected: 5.8 Unaffected: 0 , < 5.8 (semver) Unaffected: 6.18.50 , ≤ 6.18.* (semver) Unaffected: 7.2.4 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7915/mcu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5fdaf7016d7684ef756a229fd5d96b4a140eeb40",
              "status": "affected",
              "version": "e57b7901469fc0b021930b83a8094baaf3d81b09",
              "versionType": "git"
            },
            {
              "lessThan": "5f48b0d752a76590e2c613aae5345c2474627d1b",
              "status": "affected",
              "version": "e57b7901469fc0b021930b83a8094baaf3d81b09",
              "versionType": "git"
            },
            {
              "lessThan": "44b5adfe49499f53002737f5fe81d608c08122fc",
              "status": "affected",
              "version": "e57b7901469fc0b021930b83a8094baaf3d81b09",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7915/mcu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.8"
            },
            {
              "lessThan": "5.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.50",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.4",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: bound the device EEPROM address before the EFUSE copy\n\nmt7915_mcu_get_eeprom() copies a fixed EFUSE block into the driver\u0027s\ndev-\u003emt76.eeprom.data buffer at the offset reported by the MCU response\n(res-\u003eaddr, a device-controlled __le32) without checking it against the\nbuffer size. A malicious or malfunctioning device can report an arbitrary\naddress and drive a 16-byte out-of-bounds write past eeprom.data.\n\nReject a response whose address would place the copy outside eeprom.data\nbefore deriving the destination pointer. Devices that echo the requested\nin-bounds offset are unaffected."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The OOB write is driven by a MediaTek Wi-Fi 6 MCU EFUSE query response (mt7915/mt7916/mt7981/mt7986), not a routed IP service; the highest reasonable exposure is an adjacent attacker who can drive malicious firmware or device behavior on the local radio.\nAC:L - A malicious MCU response can set an arbitrary res-\u003eaddr and 16 device-controlled payload bytes; the host then memcpy\u0027s MT7915_EEPROM_BLOCK_SIZE bytes to eeprom.data+addr with no race or other condition beyond attacker control.\nPR:N - MCU EEPROM responses are consumed in mt7915_eeprom_load() during driver bring-up with no OS credential, capability, or Wi-Fi authentication check; an adjacent attacker needs no local account.\nUI:N - The copy runs automatically in mt7915_eeprom_load() during pci_probe/platform probe after firmware load; no victim action such as mounting a filesystem or opening a file is required.\nS:U - The write corrupts host kernel heap around the mt76 EEPROM buffer and is standard kernel memory corruption, not a VM escape, IOMMU bypass, or other crossed security authority.\nC:H - Attacker-controlled destination offset and payload are kernel memory corruption that can overwrite adjacent objects and pointers and be leveraged for information disclosure, so confidentiality impact is high.\nI:H - Sixteen bytes of device-controlled data are written at a device-chosen offset past the 3584/4096-byte eeprom.data allocation, an out-of-bounds write primitive that can yield arbitrary kernel writes or control-flow hijacking.\nA:H - An unbounded kernel heap write during EEPROM init can oops, panic, or hang the host, a high availability impact on Wi-Fi 6 APs, routers, and workstations."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-13T06:28:17.643Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5fdaf7016d7684ef756a229fd5d96b4a140eeb40"
        },
        {
          "url": "https://git.kernel.org/stable/c/5f48b0d752a76590e2c613aae5345c2474627d1b"
        },
        {
          "url": "https://git.kernel.org/stable/c/44b5adfe49499f53002737f5fe81d608c08122fc"
        }
      ],
      "title": "wifi: mt76: mt7915: bound the device EEPROM address before the EFUSE copy",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80937",
    "datePublished": "2026-09-11T19:42:10.822Z",
    "dateReserved": "2026-08-26T14:34:25.803Z",
    "dateUpdated": "2026-09-13T06:28:17.643Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.