CVE-2026-98830 (GCVE-0-2026-98830)
Vulnerability from cvelistv5
Published
2026-10-18 15:49
Modified
2026-10-21 12:57
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: wfx: validate MIB read length before copying to caller wfx_hif_read_mib() copies reply->length bytes from the firmware response into the caller-provided buffer without checking that reply->length does not exceed val_len. A firmware response with a length field larger than expected overruns the caller buffer and reads past the end of the reply allocation. Replace the dead -ENOMEM check with an active validation that reply->length fits within val_len before the memcpy.
References
Impacted products
Vendor Product Version
Linux Linux Version: f95a29d40782f4f0052a692a822de3ba044b19ff
Version: f95a29d40782f4f0052a692a822de3ba044b19ff
Version: f95a29d40782f4f0052a692a822de3ba044b19ff
Version: f95a29d40782f4f0052a692a822de3ba044b19ff
Version: f95a29d40782f4f0052a692a822de3ba044b19ff
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/silabs/wfx/hif_tx.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": "0",
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              "status": "unaffected",
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              "status": "unaffected",
              "version": "6.18.56",
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              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "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: wfx: validate MIB read length before copying to caller\n\nwfx_hif_read_mib() copies reply-\u003elength bytes from the firmware\nresponse into the caller-provided buffer without checking that\nreply-\u003elength does not exceed val_len. A firmware response with\na length field larger than expected overruns the caller buffer and\nreads past the end of the reply allocation.\n\nReplace the dead -ENOMEM check with an active validation that\nreply-\u003elength fits within val_len before the memcpy."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:57:17.057Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/819d4c1323e2a9b7329021d5367aa01add22b5dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/02886c18a340da59df57365f29009e1258bfe333"
        },
        {
          "url": "https://git.kernel.org/stable/c/71d140099165de03128c00dd129f1eab21c6a3c4"
        },
        {
          "url": "https://git.kernel.org/stable/c/7acb36fd60a3e7b858f12e69a919c3609b281408"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce67ebe9d8629776ce38e6995ae72fb903c828db"
        }
      ],
      "title": "wifi: wfx: validate MIB read length before copying to caller",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98830",
    "datePublished": "2026-10-18T15:49:31.843Z",
    "dateReserved": "2026-09-25T10:25:14.372Z",
    "dateUpdated": "2026-10-21T12:57:17.057Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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