CVE-2026-90374 (GCVE-0-2026-90374)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:09 – Updated: 2026-09-17 16:09
VLAI
Title
wifi: mt76: mt7996: validate RX band_idx before dereferencing phys[]
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: validate RX band_idx before dereferencing phys[] band_idx comes from a 2-bit descriptor field (0-3) and was used directly to index dev->mt76.phys[] (size __MT_MAX_BAND == 3) and dereference the result. A corrupt or reserved descriptor value could index out of bounds or hit a NULL phy on parts with fewer bands. Reject invalid band indices, mirroring mt7996_rx_get_wcid().
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 98686cd21624c75a043e96812beadddf4f6f48e5 , < 535091c587268cc783608642838a655d828eefdd (git)
Affected: 98686cd21624c75a043e96812beadddf4f6f48e5 , < 0f53ece876e1f3bbb3e18f48afc4af1ee967b16c (git)
Affected: 98686cd21624c75a043e96812beadddf4f6f48e5 , < b1c5cf8903bec5476a2233b4e45287b9a2213e02 (git)
Affected: 98686cd21624c75a043e96812beadddf4f6f48e5 , < 2243778a5fae8329ab5f18e7adcd7e03b911a1b7 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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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",
              "version": "98686cd21624c75a043e96812beadddf4f6f48e5",
              "versionType": "git"
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          "vendor": "Linux",
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      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "7.3-rc1",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: validate RX band_idx before dereferencing phys[]\n\nband_idx comes from a 2-bit descriptor field (0-3) and was used directly\nto index dev-\u003emt76.phys[] (size __MT_MAX_BAND == 3) and dereference the\nresult. A corrupt or reserved descriptor value could index out of bounds\nor hit a NULL phy on parts with fewer bands. Reject invalid band indices,\nmirroring mt7996_rx_get_wcid()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:09:14.067Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/535091c587268cc783608642838a655d828eefdd"
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          "url": "https://git.kernel.org/stable/c/0f53ece876e1f3bbb3e18f48afc4af1ee967b16c"
        },
        {
          "url": "https://git.kernel.org/stable/c/b1c5cf8903bec5476a2233b4e45287b9a2213e02"
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        {
          "url": "https://git.kernel.org/stable/c/2243778a5fae8329ab5f18e7adcd7e03b911a1b7"
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      "title": "wifi: mt76: mt7996: validate RX band_idx before dereferencing phys[]",
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  "cveMetadata": {
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    "cveId": "CVE-2026-90374",
    "datePublished": "2026-09-17T16:09:14.067Z",
    "dateReserved": "2026-09-11T19:38:34.808Z",
    "dateUpdated": "2026-09-17T16:09:14.067Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-90374",
      "date": "2026-09-29",
      "epss": "0.00209",
      "percentile": "0.09903"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-23T02:55:58.000Z",
      "cve": "CVE-2026-90374",
      "id": "msrc_CVE-2026-90374",
      "initial_release_date": "2026-09-19T01:05:19.000Z",
      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "wifi: mt76: mt7996: validate RX band_idx before dereferencing phys[]",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-90374.json",
      "version": "2"
    },
    "nvd": {
      "cve": {
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                ],
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                "defaultStatus": "affected",
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                    "versionType": "semver"
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        "cveTags": [],
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: validate RX band_idx before dereferencing phys[]\n\nband_idx comes from a 2-bit descriptor field (0-3) and was used directly\nto index dev-\u003emt76.phys[] (size __MT_MAX_BAND == 3) and dereference the\nresult. A corrupt or reserved descriptor value could index out of bounds\nor hit a NULL phy on parts with fewer bands. Reject invalid band indices,\nmirroring mt7996_rx_get_wcid()."
          }
        ],
        "id": "CVE-2026-90374",
        "lastModified": "2026-09-17T17:17:36.613",
        "metrics": {},
        "published": "2026-09-17T17:17:36.613",
        "references": [
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "vulnStatus": "Received"
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      "status": "interim",
      "title": "SUSE CVE CVE-2026-90374",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-90374.json",
      "version": "2"
    }
  }
}



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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.

Sightings

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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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • 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.



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.