Vulnerability-Lookup

GHSA-XPXX-W558-6W56

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32

Details

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

wifi: mt76: mt7996: Fix possible NULL pointer dereference in mt7996_mac_write_txwi_80211()

For injected frames (e.g. via radiotap), mac80211 can pass info->control.vif = NULL, as explicitly noted in struct ieee80211_tx_info. Check vif pointer before executing ieee80211_vif_is_mld() in mt7996_mac_write_txwi_80211 routine in order to avoid a possible NULL pointer dereference.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74322"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:32Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: Fix possible NULL pointer dereference in mt7996_mac_write_txwi_80211()\n\nFor injected frames (e.g. via radiotap), mac80211 can pass\ninfo-\u003econtrol.vif = NULL, as explicitly noted in struct ieee80211_tx_info.\nCheck vif pointer before executing ieee80211_vif_is_mld() in\nmt7996_mac_write_txwi_80211 routine in order to avoid a possible NULL\npointer dereference.",
  "id": "GHSA-xpxx-w558-6w56",
  "modified": "2026-08-15T06:32:30Z",
  "published": "2026-08-15T06:32:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74322"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61370e6674b5253de5686813ceeceebc35a7d3e5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63e6151b9791b31877a88ff62806e7c407683955"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dfb27e5dd9e4d34fbb74fa834c644dcef0be2be9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-74322 (GCVE-0-2026-74322)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:58 – Updated: 2026-08-17 05:17

Title

wifi: mt76: mt7996: Fix possible NULL pointer dereference in mt7996_mac_write_txwi_80211()

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: Fix possible NULL pointer dereference in mt7996_mac_write_txwi_80211() For injected frames (e.g. via radiotap), mac80211 can pass info->control.vif = NULL, as explicitly noted in struct ieee80211_tx_info. Check vif pointer before executing ieee80211_vif_is_mld() in mt7996_mac_write_txwi_80211 routine in order to avoid a possible NULL pointer dereference.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/dfb27e5dd9e4d34fb…
https://git.kernel.org/stable/c/63e6151b9791b3187…
https://git.kernel.org/stable/c/61370e6674b5253de…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f0b0b239b8f36cdc55cf0bc1bac75ec07fc9fef1 , < dfb27e5dd9e4d34fbb74fa834c644dcef0be2be9 (git) Affected: f0b0b239b8f36cdc55cf0bc1bac75ec07fc9fef1 , < 63e6151b9791b31877a88ff62806e7c407683955 (git) Affected: f0b0b239b8f36cdc55cf0bc1bac75ec07fc9fef1 , < 61370e6674b5253de5686813ceeceebc35a7d3e5 (git)
Linux	Linux	Affected: 6.15 Unaffected: 0 , < 6.15 (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/mac.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "status": "affected",
              "version": "f0b0b239b8f36cdc55cf0bc1bac75ec07fc9fef1",
              "versionType": "git"
            },
            {
              "lessThan": "61370e6674b5253de5686813ceeceebc35a7d3e5",
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              "version": "f0b0b239b8f36cdc55cf0bc1bac75ec07fc9fef1",
              "versionType": "git"
            }
          ]
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        {
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          "programFiles": [
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          ],
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          "vendor": "Linux",
          "versions": [
            {
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              "version": "6.15"
            },
            {
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              "version": "0",
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            },
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              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
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                },
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                  "versionEndExcluding": "7.2",
                  "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: Fix possible NULL pointer dereference in mt7996_mac_write_txwi_80211()\n\nFor injected frames (e.g. via radiotap), mac80211 can pass\ninfo-\u003econtrol.vif = NULL, as explicitly noted in struct ieee80211_tx_info.\nCheck vif pointer before executing ieee80211_vif_is_mld() in\nmt7996_mac_write_txwi_80211 routine in order to avoid a possible NULL\npointer dereference."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:17:12.538Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        },
        {
          "url": "https://git.kernel.org/stable/c/61370e6674b5253de5686813ceeceebc35a7d3e5"
        }
      ],
      "title": "wifi: mt76: mt7996: Fix possible NULL pointer dereference in mt7996_mac_write_txwi_80211()",
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        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74322",
    "datePublished": "2026-08-15T05:58:18.167Z",
    "dateReserved": "2026-08-15T05:44:03.884Z",
    "dateUpdated": "2026-08-17T05:17:12.538Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

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

GHSA-XPXX-W558-6W56

CVE-2026-74322 (GCVE-0-2026-74322)

Tags

Sightings

Nomenclature