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CVE-2026-90349

Estado: RecibidaSin puntuar—

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

wifi: mt76: mt7996: fix out-of-bounds link array access in mt7996_tx()

When mac80211 leaves the link unspecified, mt7996_tx() substitutes the primary link id of the station or vif. That value is IEEE80211_LINK_UNSPECIFIED (0xf) until the first link has been added, and it is then used unchecked to index vif->link_conf[], mvif->mt76.link[] and sta->link[], all of which hold IEEE80211_MLD_MAX_NUM_LINKS (15) entries.

Clamp the primary link id to the default link before using it, and use the clamped value for the link_sta fallback as well.

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-2026-90349",
  "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": "1609b014aa29f9a2bf3aaa93f71de4a06725845e",
              "lessThan": "637bb99cc766a858d744905e46638459ca128b6c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1609b014aa29f9a2bf3aaa93f71de4a06725845e",
              "lessThan": "aff81505a84d27f83b4db8e039e813930cb23c2c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1609b014aa29f9a2bf3aaa93f71de4a06725845e",
              "lessThan": "4330a0ef9f75a54fde3548432a9a698f06bab635",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/main.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": "6.18.52",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/main.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:17:33.700",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4330a0ef9f75a54fde3548432a9a698f06bab635",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/637bb99cc766a858d744905e46638459ca128b6c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/aff81505a84d27f83b4db8e039e813930cb23c2c",
      "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 out-of-bounds link array access in mt7996_tx()\n\nWhen mac80211 leaves the link unspecified, mt7996_tx() substitutes the\nprimary link id of the station or vif. That value is\nIEEE80211_LINK_UNSPECIFIED (0xf) until the first link has been added,\nand it is then used unchecked to index vif->link_conf[],\nmvif->mt76.link[] and sta->link[], all of which hold\nIEEE80211_MLD_MAX_NUM_LINKS (15) entries.\n\nClamp the primary link id to the default link before using it, and use\nthe clamped value for the link_sta fallback as well."
    }
  ],
  "lastModified": "2026-09-17T17:17:33.700",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}