CVE-2026-74323

Estado: RecibidaAlta (8.8)—

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

wifi: mt76: mt7996: Fix possible token leak in mt7996_tx_prepare_skb()

If link_conf or link_sta lookup fails in mt7996_tx_prepare_skb routine, mt7996 driver leaks an already allocated tx token. Fix the issue releasing the token in case of error.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 8.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.38%
Percentil entre todas las CVEs puntuadas: 29
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement85 %
Impacto principalT1499.004 Application or System Exploitationimpact75 %

AV:A (red adyacente) sin privilegios previos → T1210. Token leak en WiFi driver causa agotamiento de recursos (DoS por aplicación)

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

Vulnerability Scanning Threat Intelligence Program Privileged Account Management Network Segmentation Filter Network Traffic Disable or Remove Feature or Program

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-2026-74323",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "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": "7ef0c7ad735b0c38140259519a3f165bee2b857c",
              "lessThan": "06e65d6cf80490bc0457d339595d1ed5a89e8899",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ef0c7ad735b0c38140259519a3f165bee2b857c",
              "lessThan": "fa0e9aa92a7bc97fc42014c5efaaf1278fa92723",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7ef0c7ad735b0c38140259519a3f165bee2b857c",
              "lessThan": "831074096d0450308357271fc0ffd3f600a2487e",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/mac.c",
            "drivers/net/wireless/mediatek/mt76/tx.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.18",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/mac.c",
            "drivers/net/wireless/mediatek/mt76/tx.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:22:32.877",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/06e65d6cf80490bc0457d339595d1ed5a89e8899",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/831074096d0450308357271fc0ffd3f600a2487e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fa0e9aa92a7bc97fc42014c5efaaf1278fa92723",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: Fix possible token leak in mt7996_tx_prepare_skb()\n\nIf link_conf or link_sta lookup fails in mt7996_tx_prepare_skb routine,\nmt7996 driver leaks an already allocated tx token. Fix the issue\nreleasing the token in case of error."
    }
  ],
  "lastModified": "2026-08-17T06:19:26.740",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}