CVE-2026-98330

Estado: RecibidaAlta (7)—

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

wifi: cfg80211: get the wiphy out of a dying network namespace

When a network namespace is destroyed, cfg80211_pernet_exit() moves any wiphy back to the initial namespace, and just warns if that fails. But moving an interface can fail (due to allocation failures), and then the wiphy is left behind with a garbage netns pointer:

Note that commit debac3a20dec ("net: Remove conflicting altnames for dying netns in __dev_change_net_namespace().") fixed another path that could reach it without allocation failures.

Remove interfaces that cannot be moved instead of failing the switch, so that the wiphy always ends up in the initial namespace. In this case the netdev core will unregister the interfaces anyway.

Detalles técnicos trazas, registros y código del informe original

  Kernel mode fault at addr 0x30
  genlmsg_multicast_netns.constprop.0+0x46/0xcf [cfg80211]
  nl80211_notify_wiphy+0xcd/0xe8 [cfg80211]
  wiphy_unregister+0x169/0x3fc [cfg80211]

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.13%
Percentil entre todas las CVEs puntuadas: 2
Fecha de la puntuación: 7/10/2026

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1499.004 Application or System Exploitationimpact75 %

Vulnerabilidad local de escalada de privilegios en el kernel de Linux (AV:L, PR:L) que causa una falla de kernel (kernel panic) por puntero inválido en cfg80211; resulta en DoS del sistema.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence Program Filter Network Traffic Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software

Tecnologías afectadas (1)

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

Linux — Linux Kernel^AI

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-98330",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1
      }
    ]
  },
  "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": "463d018323851a608eef52a9427b0585005c647f",
              "lessThan": "caa02072b2986d4b0e7a824de05782ef7b03a0ba",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "463d018323851a608eef52a9427b0585005c647f",
              "lessThan": "b949b2720688691f1e41bdbfbe3df2b6dc77c34d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "463d018323851a608eef52a9427b0585005c647f",
              "lessThan": "4635b1a1c1d693178a537446a6e09963f0fdae52",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/wireless/core.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.32"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.32",
              "versionType": "semver"
            },
            {
              "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": [
            "net/wireless/core.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-06T09:18:25.387",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4635b1a1c1d693178a537446a6e09963f0fdae52",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b949b2720688691f1e41bdbfbe3df2b6dc77c34d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/caa02072b2986d4b0e7a824de05782ef7b03a0ba",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: get the wiphy out of a dying network namespace\n\nWhen a network namespace is destroyed, cfg80211_pernet_exit() moves any\nwiphy back to the initial namespace, and just warns if that fails. But\nmoving an interface can fail (due to allocation failures), and then the\nwiphy is left behind with a garbage netns pointer:\n\n  Kernel mode fault at addr 0x30\n  genlmsg_multicast_netns.constprop.0+0x46/0xcf [cfg80211]\n  nl80211_notify_wiphy+0xcd/0xe8 [cfg80211]\n  wiphy_unregister+0x169/0x3fc [cfg80211]\n\nNote that commit debac3a20dec (\"net: Remove conflicting altnames for\ndying netns in __dev_change_net_namespace().\") fixed another path\nthat could reach it without allocation failures.\n\nRemove interfaces that cannot be moved instead of failing the switch,\nso that the wiphy always ends up in the initial namespace. In this\ncase the netdev core will unregister the interfaces anyway."
    }
  ],
  "lastModified": "2026-10-07T07:17:09.257",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}