{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "6f413b559f86a2894188e082e389ff95ee428345"
            },
            {
              "fixed": "0af00f1459f5dd757f0d392f8caa38039561ac62"
            },
            {
              "fixed": "dc17721d42e6d89f63572e63add8306a0e15eb3c"
            },
            {
              "fixed": "9b496e3371c04f0a03b7faa5d2442536d00e3998"
            },
            {
              "fixed": "c4ab8e2d4432abb646c5c0687f8dab173da901f9"
            },
            {
              "fixed": "aa2f716327be1818e1cb156da8a2844804aaec2f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.10.0"
            },
            {
              "fixed": "6.6.143"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.93"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.35"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63959.json"
  },
  "details": "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.",
  "id": "CVE-2026-63959",
  "modified": "2026-08-12T03:51:39.613703364Z",
  "published": "2026-07-19T14:55:49.553Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0af00f1459f5dd757f0d392f8caa38039561ac62"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b496e3371c04f0a03b7faa5d2442536d00e3998"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa2f716327be1818e1cb156da8a2844804aaec2f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c4ab8e2d4432abb646c5c0687f8dab173da901f9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dc17721d42e6d89f63572e63add8306a0e15eb3c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63959.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63959"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT"
}