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CVE-2026-98349

Estado: RecibidaSin puntuar—

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

wifi: libipw: reject too-short beacon and probe responses

libipw_process_probe_response() and the libipw_network_init() call it makes assume the frame contains the full 36-byte beacon and probe response prefix, but the ipw2100 and ipw2200 receive paths only establish that a management frame carries the generic 24-byte three-address header.

libipw_network_init() then computes the information element length as

stats->len is a u16 and sizeof() has type size_t, so the subtraction is evaluated as size_t and wraps instead of going negative.

Leer descripción completaMostrar menos

Truncating that to the u16 length parameter of libipw_parse_info_param() yields 65524 for a 24-byte beacon, and the parser then walks the receive buffer as if it held almost 64 KiB of information elements, reading past the allocation.

Reject the frame before any fixed field is touched.

Found by an AI-assisted review of length arithmetic in management frame parsers. Verified with a KUnit case under Generic KASAN on arm64 under QEMU; I do not have the hardware, so it is not tested on a real device.

Detalles técnicos trazas, registros y código del informe original
	stats->len - sizeof(*beacon)

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)

Mostrar
{
  "id": "CVE-2026-98349",
  "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": "cee6f141b3bebe62eb0363fd147acb52023935f0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "23afeb5d2bdfd34c8a0a661876291a4fa9978293",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "89959ff00a978f3172726d3d5f861ee6f1aae26d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "14ae269c1306053ddf1ccf37c4bd66e085a652d1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "ff756e6647722b7d225d882f7bdb186d8eee318e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "2c87bbc00dc93149d1dc4f803ad92d92e4ef3758",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "19959fb60228f6dccc40d55507f8b1a751c2dc89",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
              "lessThan": "5ce5721e8cbe3e80db8f43851cc2a2a92485ef4b",
              "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": "6.12.112",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/intel/ipw2x00/libipw_rx.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-06T09:18:28.127",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/14ae269c1306053ddf1ccf37c4bd66e085a652d1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/19959fb60228f6dccc40d55507f8b1a751c2dc89",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/23afeb5d2bdfd34c8a0a661876291a4fa9978293",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2c87bbc00dc93149d1dc4f803ad92d92e4ef3758",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5ce5721e8cbe3e80db8f43851cc2a2a92485ef4b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/89959ff00a978f3172726d3d5f861ee6f1aae26d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cee6f141b3bebe62eb0363fd147acb52023935f0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ff756e6647722b7d225d882f7bdb186d8eee318e",
      "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: reject too-short beacon and probe responses\n\nlibipw_process_probe_response() and the libipw_network_init() call it\nmakes assume the frame contains the full 36-byte beacon and probe\nresponse prefix, but the ipw2100 and ipw2200 receive paths only\nestablish that a management frame carries the generic 24-byte\nthree-address header.\n\nlibipw_network_init() then computes the information element length as\n\n\tstats->len - sizeof(*beacon)\n\nstats->len is a u16 and sizeof() has type size_t, so the subtraction is\nevaluated as size_t and wraps instead of going negative.  Truncating\nthat to the u16 length parameter of libipw_parse_info_param() yields\n65524 for a 24-byte beacon, and the parser then walks the receive\nbuffer as if it held almost 64 KiB of information elements, reading\npast the allocation.\n\nReject the frame before any fixed field is touched.\n\nFound by an AI-assisted review of length arithmetic in management frame\nparsers.  Verified with a KUnit case under Generic KASAN on arm64 under\nQEMU; I do not have the hardware, so it is not tested on a real device."
    }
  ],
  "lastModified": "2026-10-06T09:18:28.127",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}