{
  "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-2026-89818",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89818",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-16T10:30:50.946Z",
    "updatedAt": "2026-10-19T08:53:12.347Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "drm/amdgpu/vcn: fix integer overflow in dec_msg buffer count check",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn: fix integer overflow in dec_msg buffer count check\n\nIf the supplied msg[2] (num_buffers) is 0x3FFFFFFF, the expression\n6 + num_buffers * 4 wraps to 2 and the bounds check passes, letting\nthe parser loop far past the end of the message BO. Triggering it\nadditionally requires a ~4GiB mapping so that msg[1] survives the\nearlier \"header does not fit in BO\" check.\n\nRewrite the test in division form, which is overflow-free by\nconstruction. Also update the message to reflect that msg is invalid.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "88411caee8f576d6b5abf6531232fcc0ce756dc5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c2340281be4ddacb8c203e2bce59b126d1d6c4c8"
            },
            {
              "version": "c72a8b4dc6d598e3831ef3abd9c6527dfbf4810e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6dceaeceaa7c8396339f3ea34b0110cb912ca61b"
            },
            {
              "version": "7688143ca62edeecacb3ba0a2cea129dbd262a18",
              "status": "affected",
              "versionType": "git",
              "lessThan": "47799e1f893d47d8af231710a61065e3ec8a13e8"
            },
            {
              "version": "63b51e8a9d54317d31cc3856c1e12407070d5fc2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7e28853c78c20bb8ba4c1dba702430cd05e09f76"
            },
            {
              "version": "b193019860d61e92da395eae2011f2f6716b182f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9ae19bd60891bea0a7b7504cc8dbfe74570ac3b3"
            },
            {
              "version": "b193019860d61e92da395eae2011f2f6716b182f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4d7390530853eb7befda9cc786e4c86e8ad7ac9e"
            },
            {
              "version": "f55552adb100eb54a6e6dabff4fbdc8679bd3fa0",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "82c535eff05490c71153af57de9fe85502fcb5d5",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "638d3e0b9eb77aa53fdd60e2b928761d16ba76fa",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "870c8738c3774336baedddd0240951d078a703b8",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "638e48ee39d0f2af9336f917a6f5d6692dd64d93",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "e382e0b81a3e7bd21504fee1d01ae8b08f84d3a7",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "3c817a60b09eaab926e475088e750936efcc95ae",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "6.1.175",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.188"
            },
            {
              "version": "6.6.140",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6.157"
            },
            {
              "version": "6.12.90",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12.110"
            },
            {
              "version": "6.18.32",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.18.51"
            },
            {
              "version": "5.15.209",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.16"
            },
            {
              "version": "7.0.9",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "7.1"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "7.1",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "7.1"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.110",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.51",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}