Vulnerability-Lookup

GHSA-XHW4-F4C3-7C2F

Vulnerability from github – Published: 2026-07-19 15:30 – Updated: 2026-07-20 15:31

Details

In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link()

Clear WCID pointer removing the sta link in mt7996_mac_sta_deinit_link routine.

Severity

8.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-63866"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T15:16:53Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link()\n\nClear WCID pointer removing the sta link in mt7996_mac_sta_deinit_link\nroutine.",
  "id": "GHSA-xhw4-f4c3-7c2f",
  "modified": "2026-07-20T15:31:49Z",
  "published": "2026-07-19T15:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63866"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/455a48685feebf2d9c1656caad77f9ba1da7b06e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/88973240dc7c976dd320b36a9e6d925c9be083ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c575459b485c47615491b1fd29f04b43fdc3da56"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-63866 (GCVE-0-2026-63866)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:04 – Updated: 2026-07-20 13:41

Title

wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link()

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link() Clear WCID pointer removing the sta link in mt7996_mac_sta_deinit_link routine.

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

References

3 references

URL	Tags
https://git.kernel.org/stable/c/455a48685feebf2d9…
https://git.kernel.org/stable/c/c575459b485c47615…
https://git.kernel.org/stable/c/88973240dc7c976dd…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: dd82a9e02c054052b5899872c1f32805428f6131 , < 455a48685feebf2d9c1656caad77f9ba1da7b06e (git) Affected: dd82a9e02c054052b5899872c1f32805428f6131 , < c575459b485c47615491b1fd29f04b43fdc3da56 (git) Affected: dd82a9e02c054052b5899872c1f32805428f6131 , < 88973240dc7c976dd320b36a9e6d925c9be083ae (git)
Linux	Linux	Affected: 6.15 Unaffected: 0 , < 6.15 (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "455a48685feebf2d9c1656caad77f9ba1da7b06e",
              "status": "affected",
              "version": "dd82a9e02c054052b5899872c1f32805428f6131",
              "versionType": "git"
            },
            {
              "lessThan": "c575459b485c47615491b1fd29f04b43fdc3da56",
              "status": "affected",
              "version": "dd82a9e02c054052b5899872c1f32805428f6131",
              "versionType": "git"
            },
            {
              "lessThan": "88973240dc7c976dd320b36a9e6d925c9be083ae",
              "status": "affected",
              "version": "dd82a9e02c054052b5899872c1f32805428f6131",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.33",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link()\n\nClear WCID pointer removing the sta link in mt7996_mac_sta_deinit_link\nroutine."
        }
      ],
      "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"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-20T13:41:00.311Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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        },
        {
          "url": "https://git.kernel.org/stable/c/c575459b485c47615491b1fd29f04b43fdc3da56"
        },
        {
          "url": "https://git.kernel.org/stable/c/88973240dc7c976dd320b36a9e6d925c9be083ae"
        }
      ],
      "title": "wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63866",
    "datePublished": "2026-07-19T14:04:51.806Z",
    "dateReserved": "2026-07-19T07:54:57.017Z",
    "dateUpdated": "2026-07-20T13:41:00.311Z",
    "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.

Action not permitted

GHSA-XHW4-F4C3-7C2F

CVE-2026-63866 (GCVE-0-2026-63866)

Tags

Sightings

Nomenclature