{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/bios/bios_parser.c",
            "drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c",
            "drivers/gpu/drm/amd/display/dc/bios/bios_parser_helper.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6173cfea2f916e01c4f98e29cd654384a05e32a3",
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "versionType": "git"
            },
            {
              "lessThan": "0e56f460bddb397fa9a8e6faf7ae7eaa86953eb1",
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "versionType": "git"
            },
            {
              "lessThan": "2645e3caf7e013189da9c6ff621d006cca5a538b",
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "versionType": "git"
            },
            {
              "lessThan": "ff287df16a1a58aca78b08d1f3ee09fc44da0351",
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/bios/bios_parser.c",
            "drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c",
            "drivers/gpu/drm/amd/display/dc/bios/bios_parser_helper.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.15"
            },
            {
              "lessThan": "4.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Bound VBIOS record-chain walk loops\n\n[Why \u0026 How]\nAll record-chain walk loops in bios_parser.c and bios_parser2.c use\nfor(;;) and only terminate on a 0xFF record_type sentinel or zero\nrecord_size. A malformed VBIOS image missing the terminator record\ncauses unbounded iteration at probe time, potentially hundreds of\nthousands of iterations with record_size=1. In the final iterations\nnear the BIOS image boundary, struct casts beyond the 2-byte header\nvalidated by GET_IMAGE can also read out of bounds.\n\nCap all 14 record-chain walk loops to BIOS_MAX_NUM_RECORD (256)\niterations. The atombios.h defines up to 22 distinct record types\nand atomfirmware.h has 13. Assuming an average of less than 10\nrecords per type (which is reasonable since most are connector-\nbased) 256 is a generous upper bound.\n\n(cherry picked from commit 95700a3d660287ed657d6892f7be9ffc0e294a93)"
    }
  ],
  "id": "CVE-2026-53138",
  "lastModified": "2026-06-30T14:44:27.313",
  "metrics": {},
  "published": "2026-06-25T09:16:31.150",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0e56f460bddb397fa9a8e6faf7ae7eaa86953eb1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2645e3caf7e013189da9c6ff621d006cca5a538b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6173cfea2f916e01c4f98e29cd654384a05e32a3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ff287df16a1a58aca78b08d1f3ee09fc44da0351"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

{
  "affected": [],
  "aliases": [
    "CVE-2026-53138"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:31Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Bound VBIOS record-chain walk loops\n\n[Why \u0026 How]\nAll record-chain walk loops in bios_parser.c and bios_parser2.c use\nfor(;;) and only terminate on a 0xFF record_type sentinel or zero\nrecord_size. A malformed VBIOS image missing the terminator record\ncauses unbounded iteration at probe time, potentially hundreds of\nthousands of iterations with record_size=1. In the final iterations\nnear the BIOS image boundary, struct casts beyond the 2-byte header\nvalidated by GET_IMAGE can also read out of bounds.\n\nCap all 14 record-chain walk loops to BIOS_MAX_NUM_RECORD (256)\niterations. The atombios.h defines up to 22 distinct record types\nand atomfirmware.h has 13. Assuming an average of less than 10\nrecords per type (which is reasonable since most are connector-\nbased) 256 is a generous upper bound.\n\n(cherry picked from commit 95700a3d660287ed657d6892f7be9ffc0e294a93)",
  "id": "GHSA-qc6f-vg59-3945",
  "modified": "2026-06-25T09:31:18Z",
  "published": "2026-06-25T09:31:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53138"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e56f460bddb397fa9a8e6faf7ae7eaa86953eb1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2645e3caf7e013189da9c6ff621d006cca5a538b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6173cfea2f916e01c4f98e29cd654384a05e32a3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff287df16a1a58aca78b08d1f3ee09fc44da0351"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-53138 drm/amd/display: Bound VBIOS record-chain walk loops - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-53138.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "drm/amd/display: Bound VBIOS record-chain walk loops",
    "tracking": {
      "current_release_date": "2026-06-28T02:00:27.000Z",
      "generator": {
        "date": "2026-06-28T07:10:57.311Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-53138",
      "initial_release_date": "2026-06-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-06-27T01:08:15.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2026-06-28T02:00:27.000Z",
          "legacy_version": "2",
          "number": "2",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "azl3 kernel 0:6.6.141.1-1.azl3",
                "product": {
                  "name": "azl3 kernel 0:6.6.141.1-1.azl3",
                  "product_id": "2"
                }
              },
              {
                "category": "product_version_range",
                "name": "azl3 kernel 0:6.6.143.1-1.azl3",
                "product": {
                  "name": "azl3 kernel 0:6.6.143.1-1.azl3",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "kernel"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 kernel 0:6.6.141.1-1.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-2"
        },
        "product_reference": "2",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 kernel 0:6.6.143.1-1.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-53138",
      "notes": [
        {
          "category": "general",
          "text": "Linux",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "known_affected": [
          "17084-2",
          "17084-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-53138 drm/amd/display: Bound VBIOS record-chain walk loops - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-53138.json"
        }
      ],
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-06-27T01:08:15.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-2"
          ]
        },
        {
          "category": "none_available",
          "date": "2026-06-27T01:08:15.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-1"
          ]
        }
      ],
      "title": "drm/amd/display: Bound VBIOS record-chain walk loops"
    }
  ]
}