CVE-2026-90374 (GCVE-0-2026-90374)
Vulnerability from cvelistv5
Published
2026-09-17 16:09
Modified
2026-10-21 12:51
Severity ?
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().
References
Impacted products
Vendor Product Version
Linux Linux Version: 98686cd21624c75a043e96812beadddf4f6f48e5
Version: 98686cd21624c75a043e96812beadddf4f6f48e5
Version: 98686cd21624c75a043e96812beadddf4f6f48e5
Version: 98686cd21624c75a043e96812beadddf4f6f48e5
Version: 98686cd21624c75a043e96812beadddf4f6f48e5
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/mac.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "6.2"
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              "version": "0",
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              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "negate": false,
              "operator": "OR"
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      "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": "2026-10-21T12:51:23.581Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/493a029c205a994644327d554f0cfeb9651aba7c"
        },
        {
          "url": "https://git.kernel.org/stable/c/535091c587268cc783608642838a655d828eefdd"
        },
        {
          "url": "https://git.kernel.org/stable/c/0f53ece876e1f3bbb3e18f48afc4af1ee967b16c"
        },
        {
          "url": "https://git.kernel.org/stable/c/b1c5cf8903bec5476a2233b4e45287b9a2213e02"
        },
        {
          "url": "https://git.kernel.org/stable/c/2243778a5fae8329ab5f18e7adcd7e03b911a1b7"
        }
      ],
      "title": "wifi: mt76: mt7996: validate RX band_idx before dereferencing phys[]",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90374",
    "datePublished": "2026-09-17T16:09:14.067Z",
    "dateReserved": "2026-09-11T19:38:34.808Z",
    "dateUpdated": "2026-10-21T12:51:23.581Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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