{
  "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-2026-80555",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-80555",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-26T14:37:22.969Z",
    "updatedAt": "2026-08-27T12:40:15.211Z",
    "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": "s390/vfio_ccw: Free all memory if cp_init() fails",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/vfio_ccw: Free all memory if cp_init() fails\n\nThe routine cp_free() is called to unpin/free any memory once an I/O\nis completed successfully, or if cp_prefetch() fails. But if cp_init()\nfails, and cp->initialized is not enabled, the same routine cannot be\nused to free all the memory.\n\nAn attempt to address this exists in ccwchain_handle_ccw(), where a\nsingle call to ccwchain_free() is made for the currently-processed\nCCW segment. But this will leak other segments (created as a result\nof a Transfer in Channel) that had been allocated as part of the same\nchannel program.\n\nAddress this by performing the cleanup outside of the recursive\nccwchain_handle_ccw()/ccwchain_loop_tic() logic.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8b515be512a2435bb8aedc6390cbe140167f9eb9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "276bd7ed34d56c48c65c43c0b08f2ee77029b2fa"
            },
            {
              "version": "8b515be512a2435bb8aedc6390cbe140167f9eb9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f9bcff265556796834122f95de16d52a8375206c"
            },
            {
              "version": "8b515be512a2435bb8aedc6390cbe140167f9eb9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "17e01e342af74de12899c206dcc9ec90684703aa"
            },
            {
              "version": "8b515be512a2435bb8aedc6390cbe140167f9eb9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "152fcb74a26804b70909381c6acc90595a0ae1c1"
            },
            {
              "version": "8b515be512a2435bb8aedc6390cbe140167f9eb9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6a917199aaf97904f5619afe3dfdacb155b03e8c"
            },
            {
              "version": "8b515be512a2435bb8aedc6390cbe140167f9eb9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "32e3d364a7b8295120d37e6a6bd433d2de26f748"
            },
            {
              "version": "8b515be512a2435bb8aedc6390cbe140167f9eb9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4699b54fada156534cbb39834d47fc9374d7a1f5"
            },
            {
              "version": "8b515be512a2435bb8aedc6390cbe140167f9eb9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "74186c2968f8f756ac3226b545b598457c910c75"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.3",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.3"
            },
            {
              "version": "5.10.267",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.218",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.185",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.154",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.105",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.46",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}