FKIE_CVE-2026-98830

Vulnerability from fkie_nvd - Published: 2026-10-18 16:17 - Updated: 2026-10-30 13:21
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/02886c18a340da59df57365f29009e1258bfe333
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/71d140099165de03128c00dd129f1eab21c6a3c4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7acb36fd60a3e7b858f12e69a919c3609b281408
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/819d4c1323e2a9b7329021d5367aa01add22b5dc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b8310b55e53622a393d14af4939f620c1828778b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce67ebe9d8629776ce38e6995ae72fb903c828db
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/silabs/wfx/hif_tx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b8310b55e53622a393d14af4939f620c1828778b",
              "status": "affected",
              "version": "f95a29d40782f4f0052a692a822de3ba044b19ff",
              "versionType": "git"
            },
            {
              "lessThan": "819d4c1323e2a9b7329021d5367aa01add22b5dc",
              "status": "affected",
              "version": "f95a29d40782f4f0052a692a822de3ba044b19ff",
              "versionType": "git"
            },
            {
              "lessThan": "02886c18a340da59df57365f29009e1258bfe333",
              "status": "affected",
              "version": "f95a29d40782f4f0052a692a822de3ba044b19ff",
              "versionType": "git"
            },
            {
              "lessThan": "71d140099165de03128c00dd129f1eab21c6a3c4",
              "status": "affected",
              "version": "f95a29d40782f4f0052a692a822de3ba044b19ff",
              "versionType": "git"
            },
            {
              "lessThan": "7acb36fd60a3e7b858f12e69a919c3609b281408",
              "status": "affected",
              "version": "f95a29d40782f4f0052a692a822de3ba044b19ff",
              "versionType": "git"
            },
            {
              "lessThan": "ce67ebe9d8629776ce38e6995ae72fb903c828db",
              "status": "affected",
              "version": "f95a29d40782f4f0052a692a822de3ba044b19ff",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/silabs/wfx/hif_tx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.5"
            },
            {
              "lessThan": "5.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-98830",
  "lastModified": "2026-10-30T13:21:29.410",
  "metrics": {},
  "published": "2026-10-18T16:17:37.250",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/02886c18a340da59df57365f29009e1258bfe333"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/71d140099165de03128c00dd129f1eab21c6a3c4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7acb36fd60a3e7b858f12e69a919c3609b281408"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/819d4c1323e2a9b7329021d5367aa01add22b5dc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b8310b55e53622a393d14af4939f620c1828778b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ce67ebe9d8629776ce38e6995ae72fb903c828db"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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