Vulnerability-Lookup

GHSA-QQ49-42V2-78C9

Vulnerability from github – Published: 2026-10-18 18:32 – Updated: 2026-10-21 15:42

Details

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

wifi: mac80211: prevent AP VLAN tx from other interfaces

Since the station lookup was factored out of ieee80211_build_hdr(), ieee80211_lookup_ra_sta() uses sta_info_get_bss() for all AP and AP VLAN frames, not only for control port frames. A unicast frame sent on one interface thus matches a station of a different VLAN of the same BSS and is transmitted to it.

Only match stations of the interface the frame is sent on, except for control port frames, since those may be sent for VLAN stations directly on the BSS interface.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98822"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-18T16:17:36Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: prevent AP VLAN tx from other interfaces\n\nSince the station lookup was factored out of ieee80211_build_hdr(),\nieee80211_lookup_ra_sta() uses sta_info_get_bss() for all AP and AP VLAN\nframes, not only for control port frames. A unicast frame sent on one\ninterface thus matches a station of a different VLAN of the same BSS and\nis transmitted to it.\n\nOnly match stations of the interface the frame is sent on, except for\ncontrol port frames, since those may be sent for VLAN stations directly\non the BSS interface.",
  "id": "GHSA-qq49-42v2-78c9",
  "modified": "2026-10-21T15:42:00Z",
  "published": "2026-10-18T18:32:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98822"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2fe08c8ff26841430a3c98ab755337325b5d47b5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7f93ca31f7fd9b42e7d692f59514436d448ac908"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/88e96d902efeefbffc34450969f40dc61a0c8a42"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad61b9a5febb42e4b96df8d30ad76ddc36dda9d0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fd875e24e8f2b202e3636b3ef8e6060874eca0e5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98822 (GCVE-0-2026-98822)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:49 – Updated: 2026-10-21 12:57

Title

wifi: mac80211: prevent AP VLAN tx from other interfaces

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: prevent AP VLAN tx from other interfaces Since the station lookup was factored out of ieee80211_build_hdr(), ieee80211_lookup_ra_sta() uses sta_info_get_bss() for all AP and AP VLAN frames, not only for control port frames. A unicast frame sent on one interface thus matches a station of a different VLAN of the same BSS and is transmitted to it. Only match stations of the interface the frame is sent on, except for control port frames, since those may be sent for VLAN stations directly on the BSS interface.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6820 records in the last 180 days details

References

5 references

URL	Tags
https://git.kernel.org/stable/c/2fe08c8ff26841430…
https://git.kernel.org/stable/c/fd875e24e8f2b202e…
https://git.kernel.org/stable/c/88e96d902efeefbff…
https://git.kernel.org/stable/c/ad61b9a5febb42e4b…
https://git.kernel.org/stable/c/7f93ca31f7fd9b42e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 97ffe75791b3e9c0797d5891070e41321c3beccb , < 2fe08c8ff26841430a3c98ab755337325b5d47b5 (git) Affected: 97ffe75791b3e9c0797d5891070e41321c3beccb , < fd875e24e8f2b202e3636b3ef8e6060874eca0e5 (git) Affected: 97ffe75791b3e9c0797d5891070e41321c3beccb , < 88e96d902efeefbffc34450969f40dc61a0c8a42 (git) Affected: 97ffe75791b3e9c0797d5891070e41321c3beccb , < ad61b9a5febb42e4b96df8d30ad76ddc36dda9d0 (git) Affected: 97ffe75791b3e9c0797d5891070e41321c3beccb , < 7f93ca31f7fd9b42e7d692f59514436d448ac908 (git)
Linux	Linux	Affected: 4.1 Unaffected: 0 , < 4.1 (semver) Unaffected: 6.6.160 , ≤ 6.6.* (semver) Unaffected: 6.12.113 , ≤ 6.12.* (semver) Unaffected: 6.18.56 , ≤ 6.18.* (semver) Unaffected: 7.2.10 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix)

Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/ieee80211_i.h",
            "net/mac80211/tx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2fe08c8ff26841430a3c98ab755337325b5d47b5",
              "status": "affected",
              "version": "97ffe75791b3e9c0797d5891070e41321c3beccb",
              "versionType": "git"
            },
            {
              "lessThan": "fd875e24e8f2b202e3636b3ef8e6060874eca0e5",
              "status": "affected",
              "version": "97ffe75791b3e9c0797d5891070e41321c3beccb",
              "versionType": "git"
            },
            {
              "lessThan": "88e96d902efeefbffc34450969f40dc61a0c8a42",
              "status": "affected",
              "version": "97ffe75791b3e9c0797d5891070e41321c3beccb",
              "versionType": "git"
            },
            {
              "lessThan": "ad61b9a5febb42e4b96df8d30ad76ddc36dda9d0",
              "status": "affected",
              "version": "97ffe75791b3e9c0797d5891070e41321c3beccb",
              "versionType": "git"
            },
            {
              "lessThan": "7f93ca31f7fd9b42e7d692f59514436d448ac908",
              "status": "affected",
              "version": "97ffe75791b3e9c0797d5891070e41321c3beccb",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/ieee80211_i.h",
            "net/mac80211/tx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.1"
            },
            {
              "lessThan": "4.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.160",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.113",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                },
                {
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                },
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
                {
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                  "vulnerable": true
                }
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              "negate": false,
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: prevent AP VLAN tx from other interfaces\n\nSince the station lookup was factored out of ieee80211_build_hdr(),\nieee80211_lookup_ra_sta() uses sta_info_get_bss() for all AP and AP VLAN\nframes, not only for control port frames. A unicast frame sent on one\ninterface thus matches a station of a different VLAN of the same BSS and\nis transmitted to it.\n\nOnly match stations of the interface the frame is sent on, except for\ncontrol port frames, since those may be sent for VLAN stations directly\non the BSS interface."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:57:13.743Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2fe08c8ff26841430a3c98ab755337325b5d47b5"
        },
        {
          "url": "https://git.kernel.org/stable/c/fd875e24e8f2b202e3636b3ef8e6060874eca0e5"
        },
        {
          "url": "https://git.kernel.org/stable/c/88e96d902efeefbffc34450969f40dc61a0c8a42"
        },
        {
          "url": "https://git.kernel.org/stable/c/ad61b9a5febb42e4b96df8d30ad76ddc36dda9d0"
        },
        {
          "url": "https://git.kernel.org/stable/c/7f93ca31f7fd9b42e7d692f59514436d448ac908"
        }
      ],
      "title": "wifi: mac80211: prevent AP VLAN tx from other interfaces",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98822",
    "datePublished": "2026-10-18T15:49:14.593Z",
    "dateReserved": "2026-09-25T10:25:14.372Z",
    "dateUpdated": "2026-10-21T12:57:13.743Z",
    "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.

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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.
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