{
  "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-2026-89819",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89819",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-16T10:30:51.898Z",
    "updatedAt": "2026-10-19T08:53:13.333Z",
    "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/amd/display: validate plane degamma LUT size for private color prop",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: validate plane degamma LUT size for private color prop\n\nUnlike the CRTC degamma path, which is guarded by\namdgpu_dm_verify_lut_sizes(), the per-plane degamma LUT size was never\nvalidated before use. __set_dm_plane_degamma() passed the user-supplied\nsize straight into __is_lut_linear() and, for a non-linear LUT, into\n__set_input_tf() -> __drm_lut_to_dc_gamma(), the latter always iterating\nMAX_COLOR_LUT_ENTRIES entries regardless of the actual LUT size.\n\nA malformed AMD_PLANE_DEGAMMA_LUT blob (e.g. a single entry) could thus\ntrigger a divide-by-zero in __is_lut_linear() or an out-of-bounds read in\n__drm_lut_to_dc_gamma(). Reject any plane degamma LUT whose size does not\nmatch MAX_COLOR_LUT_ENTRIES, mirroring the invariant the code already\nasserts a few lines below (and which the CRTC path enforces).\n\nThe AMD_PLANE_DEGAMMA_LUT property is only exposed on builds with\nAMD_PRIVATE_COLOR defined.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "980f8710075acaeb226a94cde6dda8ffad30123c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f6f04d8ae5725bcc893bdc62e3467efd97255c5b"
            },
            {
              "version": "980f8710075acaeb226a94cde6dda8ffad30123c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0b2615b8b54f58bbdf986dffb38cbc35214a5cc5"
            },
            {
              "version": "980f8710075acaeb226a94cde6dda8ffad30123c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b10cc09b329245c6d95f8fa3e7f068575e3e0e9f"
            },
            {
              "version": "980f8710075acaeb226a94cde6dda8ffad30123c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e4c3ab59021e7c146a84b6671f0d530972bd58b4"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.8"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}