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CVE-2026-98183

Estado: RecibidaSin puntuar—

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

wifi: mac80211: avoid out-of-bounds read for empty PREQ elements

ieee80211_mesh_preq_size_ok() derives the location of the PREQ bottom fields before checking whether the element contains even the fixed header. ieee80211_mesh_hwmp_preq_get_bottom() reads the flags byte to account for the optional Address Extension field. Consequently, an empty PREQ element causes a one-byte read beyond its declared payload.

Move the helper call after both size checks, so the bottom fields are only accessed when they are present.

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-2026-98183",
  "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": "8b40b1d24a6099fe9fac8e207d4cb04ab5e0baae",
              "lessThan": "3beddbd56946577478fd5e649f556aaaebe15b0a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8b40b1d24a6099fe9fac8e207d4cb04ab5e0baae",
              "lessThan": "e6031f02269c0f51cf67886d177f02bc300b47cd",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "include/linux/ieee80211-mesh.h"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.2"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "7.2",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "include/linux/ieee80211-mesh.h"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-06T09:18:03.103",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/3beddbd56946577478fd5e649f556aaaebe15b0a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e6031f02269c0f51cf67886d177f02bc300b47cd",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: avoid out-of-bounds read for empty PREQ elements\n\nieee80211_mesh_preq_size_ok() derives the location of the PREQ bottom\nfields before checking whether the element contains even the fixed\nheader. ieee80211_mesh_hwmp_preq_get_bottom() reads the flags byte to\naccount for the optional Address Extension field. Consequently, an\nempty PREQ element causes a one-byte read beyond its declared payload.\n\nMove the helper call after both size checks, so the bottom fields are\nonly accessed when they are present."
    }
  ],
  "lastModified": "2026-10-06T09:18:03.103",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}