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CVE-2026-93803

Estado: RecibidaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

wifi: libipw: fix key index receive bound checks

libipw_rx() reads skb->data[hdrlen + 3] to extract the WEP key index in both the software-decrypt key selection path and the hardware-decrypted IV/ICV strip path. In both places the existing guard only checks skb->len >= hdrlen + 3, which proves bytes up to hdrlen + 2 but not the byte at hdrlen + 3.

Require hdrlen + 4 bytes before reading that item in both paths. This is a local source-boundary check only; it does not change the key index semantics.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-93803",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "bb18262c19feb690ddde58c70e3ad04bc6fe566e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "09d4a1bc3a08bb0e19bdf250b9f575cfef0bae82",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "2836a870f612a8a6d9e390d00fa2cf6c90aa5808",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "0b61c465ea62063593bc9ac186871b69e58ae991",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "062840bdc9ee06169b3c371bf66711f1d7ec0bf4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "c54b643e9a0936d038921c547736574fd7382cea",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "74ed3669f26803b1761c1f55403062bea44c3466",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/intel/ipw2x00/libipw_rx.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.14"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.14",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/intel/ipw2x00/libipw_rx.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-24T17:17:13.240",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/062840bdc9ee06169b3c371bf66711f1d7ec0bf4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/09d4a1bc3a08bb0e19bdf250b9f575cfef0bae82",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/0b61c465ea62063593bc9ac186871b69e58ae991",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2836a870f612a8a6d9e390d00fa2cf6c90aa5808",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/74ed3669f26803b1761c1f55403062bea44c3466",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bb18262c19feb690ddde58c70e3ad04bc6fe566e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c54b643e9a0936d038921c547736574fd7382cea",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libipw: fix key index receive bound checks\n\nlibipw_rx() reads skb->data[hdrlen + 3] to extract the WEP key index in\nboth the software-decrypt key selection path and the hardware-decrypted\nIV/ICV strip path. In both places the existing guard only checks\nskb->len >= hdrlen + 3, which proves bytes up to hdrlen + 2 but not the\nbyte at hdrlen + 3.\n\nRequire hdrlen + 4 bytes before reading that item in both paths. This is\na local source-boundary check only; it does not change the key index\nsemantics."
    }
  ],
  "lastModified": "2026-10-03T11:17:50.060",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}