CVE-2026-63959

Estado: Pendiente de análisisSin puntuar—

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

usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT

A broken/malicious port can transmit a CRC-valid frame whose header advertises up to seven data objects but whose body carries fewer than that. Check for this, and rightfully reject the message, instead of reading from uninitialized stack memory.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.21%
Percentil entre todas las CVEs puntuadas: 10
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).

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-2026-63959",
  "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": "6f413b559f86a2894188e082e389ff95ee428345",
              "lessThan": "0af00f1459f5dd757f0d392f8caa38039561ac62",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6f413b559f86a2894188e082e389ff95ee428345",
              "lessThan": "dc17721d42e6d89f63572e63add8306a0e15eb3c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6f413b559f86a2894188e082e389ff95ee428345",
              "lessThan": "9b496e3371c04f0a03b7faa5d2442536d00e3998",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6f413b559f86a2894188e082e389ff95ee428345",
              "lessThan": "c4ab8e2d4432abb646c5c0687f8dab173da901f9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6f413b559f86a2894188e082e389ff95ee428345",
              "lessThan": "aa2f716327be1818e1cb156da8a2844804aaec2f",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/usb/typec/tcpm/tcpci_maxim_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": "5.10"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.10",
              "versionType": "semver"
            },
            {
              "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": [
            "drivers/usb/typec/tcpm/tcpci_maxim_core.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-07-19T16:17:14.780",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0af00f1459f5dd757f0d392f8caa38039561ac62",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9b496e3371c04f0a03b7faa5d2442536d00e3998",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/aa2f716327be1818e1cb156da8a2844804aaec2f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c4ab8e2d4432abb646c5c0687f8dab173da901f9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/dc17721d42e6d89f63572e63add8306a0e15eb3c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT\n\nA broken/malicious port can transmit a CRC-valid frame whose header\nadvertises up to seven data objects but whose body carries fewer than\nthat.  Check for this, and rightfully reject the message, instead of\nreading from uninitialized stack memory."
    }
  ],
  "lastModified": "2026-07-30T14:51:11.223",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}