{
  "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-2026-43093",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-43093",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-06T07:40:25.266Z",
    "updatedAt": "2026-10-19T19:06:13.475Z",
    "importedAt": "2026-10-24T01:58:08.712Z",
    "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": "xsk: tighten UMEM headroom validation to account for tailroom and min frame",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: tighten UMEM headroom validation to account for tailroom and min frame\n\nThe current headroom validation in xdp_umem_reg() could leave us with\ninsufficient space dedicated to even receive minimum-sized ethernet\nframe. Furthermore if multi-buffer would come to play then\nskb_shared_info stored at the end of XSK frame would be corrupted.\n\nHW typically works with 128-aligned sizes so let us provide this value\nas bare minimum.\n\nMulti-buffer setting is known later in the configuration process so\nbesides accounting for 128 bytes, let us also take care of tailroom space\nupfront.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "99e3a236dd43d06c65af0a2ef9cb44306aef6e02",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5f123bc278bf4e3283d8606321bebbfd299f4384"
            },
            {
              "version": "99e3a236dd43d06c65af0a2ef9cb44306aef6e02",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1a6051cd7e3e4c54ff3854a43b638b9292af5e67"
            },
            {
              "version": "99e3a236dd43d06c65af0a2ef9cb44306aef6e02",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8769708add9eadeea8041a9761771bb715a87104"
            },
            {
              "version": "99e3a236dd43d06c65af0a2ef9cb44306aef6e02",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a03975beb9f6af0d8ac051e30b2abeabe618414f"
            },
            {
              "version": "99e3a236dd43d06c65af0a2ef9cb44306aef6e02",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0ec4d3f6e6934deb843b561ae048cd17218e5ad1"
            },
            {
              "version": "99e3a236dd43d06c65af0a2ef9cb44306aef6e02",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9ea6ba4f3195dcba6e8b3e7b2e748593b7cafb12"
            },
            {
              "version": "99e3a236dd43d06c65af0a2ef9cb44306aef6e02",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6523bc1b40e69301f24c14338b762af4739d6d39"
            },
            {
              "version": "99e3a236dd43d06c65af0a2ef9cb44306aef6e02",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a315e022a72d95ef5f1d4e58e903cb492b0ad931"
            },
            {
              "version": "ad8fb61c184fe0f8d1e0b5b954d010fb9f94a6ee",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "25c9cdef57488578da21d99eb614b97ffcf6e59f",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "98d3c852e63b49129515dd18c875999efaf8530a",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "4.19.118",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.20"
            },
            {
              "version": "5.4.35",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.5"
            },
            {
              "version": "5.6.7",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.7"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.7",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.7"
            },
            {
              "version": "5.10.258",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.209",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.175",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.136",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.83",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.24",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.14",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}