{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-63902",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-63902",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-19T14:55:10.267Z",
    "updatedAt": "2026-07-19T14:55:10.267Z",
    "importedAt": "2026-10-24T01:58:20.586Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "USB: serial: cypress_m8: validate interrupt packet headers",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: cypress_m8: validate interrupt packet headers\n\ncypress_read_int_callback() parses the interrupt-in buffer according to\nthe selected Cypress packet format. Format 1 has a two-byte status/count\nheader and format 2 has a one-byte combined status/count header. The\nusb-serial core sizes the interrupt-in buffer from the endpoint\ndescriptor's wMaxPacketSize, and successful interrupt transfers can\ncomplete short when URB_SHORT_NOT_OK is not set.\n\nCheck that the completed packet contains the selected header before\nreading it. Malformed short reports are ignored and the interrupt URB is\nresubmitted through the existing retry path, preventing out-of-bounds\nheader-byte reads.\n\nKASAN report as below:\nKASAN slab-out-of-bounds in cypress_read_int_callback+0x240/0x7f0\nRead of size 1\nCall trace:\n  cypress_read_int_callback() (drivers/usb/serial/cypress_m8.c:1009)\n  __usb_hcd_giveback_urb()\n  dummy_timer()\n\n[ johan: use constants in header length sanity checks ]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "3416eaa1f8f8d516b77de514e14cf8da256d28fb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fcef31a5a85ccf3c313449a866ec6ed7e4132425"
            },
            {
              "version": "3416eaa1f8f8d516b77de514e14cf8da256d28fb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "aaa66708bfb1dca2acd219d1c1582f9f6d5492cb"
            },
            {
              "version": "3416eaa1f8f8d516b77de514e14cf8da256d28fb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "44f9bab8df7750a1e2a4d6cc22d7c9c2dc096aed"
            },
            {
              "version": "3416eaa1f8f8d516b77de514e14cf8da256d28fb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "be50533fe7068e86eb7adb81988e6d6a3f6dfe53"
            },
            {
              "version": "3416eaa1f8f8d516b77de514e14cf8da256d28fb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "90664556916de22467097d4c8ceb716d597a5c32"
            },
            {
              "version": "3416eaa1f8f8d516b77de514e14cf8da256d28fb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ae03453f2c809ca3cf73753269fa6184dea7160f"
            },
            {
              "version": "3416eaa1f8f8d516b77de514e14cf8da256d28fb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4a4cb0021ebe1fcadb52e04d19ed8d71470a530b"
            },
            {
              "version": "3416eaa1f8f8d516b77de514e14cf8da256d28fb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9f9bfc80c67f35a275820da7e83a35dface08281"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.26",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.26"
            },
            {
              "version": "5.10.259",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.210",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.176",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.143",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.93",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.35",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}