{
  "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-2026-80931",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-80931",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-11T19:42:06.272Z",
    "updatedAt": "2026-10-19T08:45:15.065Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "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": "w1: ds28e17: reject an oversize length on an I2C block read",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nw1: ds28e17: reject an oversize length on an I2C block read\n\nw1_f19_i2c_master_transfer() is the master_xfer for the DS28E17 1-Wire\nto I2C bridge. On an I2C_M_RECV_LEN read, it takes the length from the\ndevice. The downstream slave puts a length byte in buf[0]. The driver\nthen reads that many bytes into buf[1] with w1_f19_i2c_read().\n\nbuf[0] is controlled by the device and can be 0 to 255.\nw1_f19_i2c_read() only rejects a zero count. The caller buffer is\nI2C_SMBUS_BLOCK_MAX + 2, so 34 bytes. A length above 32 makes the read\nrun past it, up to about 222 bytes out of bounds.\n\nThe SMBus core does check buf[0] against I2C_SMBUS_BLOCK_MAX. That\ncheck runs after master_xfer returns. By then the write is already\ndone. i2c-algo-bit rejects an oversize length before it copies, and\nreturns -EPROTO.\n\nReject a length above I2C_SMBUS_BLOCK_MAX at both RECV_LEN sites, the\nsame way i2c-algo-bit does.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ebc4768ac4971eab4b570e733e47ac9dfd0e4175",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b30c021c6073559ea6851b522d8a17a524a27b4a"
            },
            {
              "version": "ebc4768ac4971eab4b570e733e47ac9dfd0e4175",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1d08877fc37e90945df38d255715bd1d6c052d46"
            },
            {
              "version": "ebc4768ac4971eab4b570e733e47ac9dfd0e4175",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bf76d61e118b7044600a65775a3bf8adc2c6823d"
            },
            {
              "version": "ebc4768ac4971eab4b570e733e47ac9dfd0e4175",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0f6496b34cc2919420f303b2aabdd9f71e084b56"
            },
            {
              "version": "ebc4768ac4971eab4b570e733e47ac9dfd0e4175",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cb55c5da9828f77db2a2701316949d4de1e9b773"
            },
            {
              "version": "ebc4768ac4971eab4b570e733e47ac9dfd0e4175",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ae0c79a8527044e54d81fd5a3b49ce6177633758"
            },
            {
              "version": "ebc4768ac4971eab4b570e733e47ac9dfd0e4175",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6df05f630c84a109736642362e452089886f9974"
            },
            {
              "version": "ebc4768ac4971eab4b570e733e47ac9dfd0e4175",
              "status": "affected",
              "versionType": "git",
              "lessThan": "169ae5e65e5aaf213b6a578f6478a9fd2e523606"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.15"
            },
            {
              "version": "5.10.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.221",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.109",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.50",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}