CVE-2026-98185 (GCVE-0-2026-98185)
Vulnerability from cvelistv5
Published
2026-10-06 08:44
Modified
2026-10-19 09:15
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: validate scan response extents mwifiex_ret_802_11_scan() subtracts the fixed response fields and the firmware-provided BSS length from resp->size without first proving that either extent fits. A short response or oversized BSS length can therefore underflow tlv_buf_size and make the TLV parser walk beyond the command response. Compute the fixed extent from the selected normal or background scan response. Validate that the fixed fields and BSS data fit before deriving the TLV extent and entering the parser.
References
Impacted products
Vendor Product Version
Linux Linux Version: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e
Version: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e
Version: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e
Version: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e
Version: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e
Version: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e
Version: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e
Version: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/marvell/mwifiex/scan.c"
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          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.0"
            },
            {
              "lessThan": "3.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
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              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
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              "version": "6.18.54",
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              "version": "7.2.8",
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            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: validate scan response extents\n\nmwifiex_ret_802_11_scan() subtracts the fixed response fields and the\nfirmware-provided BSS length from resp-\u003esize without first proving that\neither extent fits. A short response or oversized BSS length can\ntherefore underflow tlv_buf_size and make the TLV parser walk beyond the\ncommand response.\n\nCompute the fixed extent from the selected normal or background scan\nresponse. Validate that the fixed fields and BSS data fit before deriving\nthe TLV extent and entering the parser."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:15:16.426Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/25217c5f6ce0bf3004f80c129464cd35fe9a420f"
        },
        {
          "url": "https://git.kernel.org/stable/c/48312f0085aa1577d6d41af2a079b34de17c1a57"
        },
        {
          "url": "https://git.kernel.org/stable/c/dccf5ecaad4d8d43c545921f20328e8f91af8698"
        },
        {
          "url": "https://git.kernel.org/stable/c/c4943323fda22ef27bb6479b9d328ae48c63f64c"
        },
        {
          "url": "https://git.kernel.org/stable/c/cb0008480ed7d5cf76f3ad9668a91bbb7d0b4417"
        },
        {
          "url": "https://git.kernel.org/stable/c/9cff2f39ed38a32070b08364c4c9346e85b8f9ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/7106ad8b74f50cca1ef36131f327d2c78f556daa"
        },
        {
          "url": "https://git.kernel.org/stable/c/3687d7d48070838cc2953431b3a27717cab0aaf6"
        }
      ],
      "title": "wifi: mwifiex: validate scan response extents",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98185",
    "datePublished": "2026-10-06T08:44:27.654Z",
    "dateReserved": "2026-09-25T10:25:14.323Z",
    "dateUpdated": "2026-10-19T09:15:16.426Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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