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

Vulnerability from cvelistv5 – Published: 2026-08-15 05:58 – Updated: 2026-08-17 05:17
VLAI
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
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f0b0b239b8f36cdc55cf0bc1bac75ec07fc9fef1 , < dfb27e5dd9e4d34fbb74fa834c644dcef0be2be9 (git)
Affected: f0b0b239b8f36cdc55cf0bc1bac75ec07fc9fef1 , < 63e6151b9791b31877a88ff62806e7c407683955 (git)
Affected: f0b0b239b8f36cdc55cf0bc1bac75ec07fc9fef1 , < 61370e6674b5253de5686813ceeceebc35a7d3e5 (git)
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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"
          ],
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              "versionType": "git"
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              "versionType": "git"
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "versionType": "semver"
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              "versionType": "semver"
            },
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              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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                  "versionStartIncluding": "6.15",
                  "vulnerable": true
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                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "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",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/dfb27e5dd9e4d34fbb74fa834c644dcef0be2be9"
        },
        {
          "url": "https://git.kernel.org/stable/c/63e6151b9791b31877a88ff62806e7c407683955"
        },
        {
          "url": "https://git.kernel.org/stable/c/61370e6674b5253de5686813ceeceebc35a7d3e5"
        }
      ],
      "title": "wifi: mt76: mt7996: Fix possible NULL pointer dereference in mt7996_mac_write_txwi_80211()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "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"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-74322",
      "date": "2026-09-04",
      "epss": "0.00166",
      "percentile": "0.06113"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-74322\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-15T06:22:32.757\",\"lastModified\":\"2026-08-17T06:19:26.660\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/wireless/mediatek/mt76/mt7996/mac.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f0b0b239b8f36cdc55cf0bc1bac75ec07fc9fef1\",\"lessThan\":\"dfb27e5dd9e4d34fbb74fa834c644dcef0be2be9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f0b0b239b8f36cdc55cf0bc1bac75ec07fc9fef1\",\"lessThan\":\"63e6151b9791b31877a88ff62806e7c407683955\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f0b0b239b8f36cdc55cf0bc1bac75ec07fc9fef1\",\"lessThan\":\"61370e6674b5253de5686813ceeceebc35a7d3e5\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/wireless/mediatek/mt76/mt7996/mac.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/61370e6674b5253de5686813ceeceebc35a7d3e5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/63e6151b9791b31877a88ff62806e7c407683955\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dfb27e5dd9e4d34fbb74fa834c644dcef0be2be9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-20T17:18:48+00:00",
      "cve": "CVE-2026-74322",
      "id": "CVE-2026-74322",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: mt76: mt7996: Fix possible NULL pointer dereference in mt7996_mac_write_txwi_80211()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74322.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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