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CVE-2026-63991

Estado: Pendiente de análisisSin puntuar—

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

Bluetooth: 6lowpan: check skb_clone() return value in send_mcast_pkt()

The skb_clone() function can return NULL if memory allocation fails. send_mcast_pkt() calls skb_clone() without checking the return value, which can lead to a NULL pointer dereference in send_pkt() when it dereferences skb->data. Add a NULL check after skb_clone() and skip the peer if the clone fails.

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-2026-63991",
  "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": "18722c247023035b9e2e2a08a887adec2a9a6e49",
              "lessThan": "9afcb5ea080af13aab37930da627db43bd277665",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "18722c247023035b9e2e2a08a887adec2a9a6e49",
              "lessThan": "9903a04becf059e44cccf625e23689b7d4378384",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "18722c247023035b9e2e2a08a887adec2a9a6e49",
              "lessThan": "d630c4b25f36e0e68461561e4c70957ec37fdedd",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "18722c247023035b9e2e2a08a887adec2a9a6e49",
              "lessThan": "b06203ac5f12929d79146bb9f063c2af1d679e63",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "18722c247023035b9e2e2a08a887adec2a9a6e49",
              "lessThan": "3d5d81d294ba09487c86bc4ba33dc4a4bec5d215",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "18722c247023035b9e2e2a08a887adec2a9a6e49",
              "lessThan": "e673889a35a5e4c586d0fae67d8755ca4367d3e2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "18722c247023035b9e2e2a08a887adec2a9a6e49",
              "lessThan": "2061d080a013c0ec0a56162cd501fb36d2befc26",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "18722c247023035b9e2e2a08a887adec2a9a6e49",
              "lessThan": "3c40d381ce04f9575a5d8b542898183c3b4b38dc",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/bluetooth/6lowpan.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.14"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.14",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.93",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.35",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.0.12",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/bluetooth/6lowpan.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-07-19T16:17:37.783",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2061d080a013c0ec0a56162cd501fb36d2befc26",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3c40d381ce04f9575a5d8b542898183c3b4b38dc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3d5d81d294ba09487c86bc4ba33dc4a4bec5d215",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9903a04becf059e44cccf625e23689b7d4378384",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9afcb5ea080af13aab37930da627db43bd277665",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b06203ac5f12929d79146bb9f063c2af1d679e63",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d630c4b25f36e0e68461561e4c70957ec37fdedd",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e673889a35a5e4c586d0fae67d8755ca4367d3e2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: 6lowpan: check skb_clone() return value in send_mcast_pkt()\n\nThe skb_clone() function can return NULL if memory allocation fails.\nsend_mcast_pkt() calls skb_clone() without checking the return value, which\ncan lead to a NULL pointer dereference in send_pkt() when it dereferences\nskb->data.\nAdd a NULL check after skb_clone() and skip the peer if the clone fails."
    }
  ],
  "lastModified": "2026-07-30T14:51:11.223",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}