{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c"
            },
            {
              "fixed": "e94f5323c41f32a74160378c3b19850d1f203ad5"
            },
            {
              "fixed": "04e271a952b8863bbafc99bd51aca4c32bff0e0d"
            },
            {
              "fixed": "6723188c42ca3b34a9fce634d7a0ecc9ccd5cd56"
            },
            {
              "fixed": "499c6b43a79dd684bddbd18fe8b2235aa2764db4"
            },
            {
              "fixed": "6173cfea2f916e01c4f98e29cd654384a05e32a3"
            },
            {
              "fixed": "0e56f460bddb397fa9a8e6faf7ae7eaa86953eb1"
            },
            {
              "fixed": "2645e3caf7e013189da9c6ff621d006cca5a538b"
            },
            {
              "fixed": "ff287df16a1a58aca78b08d1f3ee09fc44da0351"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.15.0"
            },
            {
              "fixed": "5.10.260"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.211"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.177"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.144"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.94"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.36"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53138.json"
  },
  "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": "CVE-2026-53138",
  "modified": "2026-07-09T03:51:21.782616866Z",
  "published": "2026-06-25T08:38:26.859Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/04e271a952b8863bbafc99bd51aca4c32bff0e0d"
    },
    {
      "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/499c6b43a79dd684bddbd18fe8b2235aa2764db4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6173cfea2f916e01c4f98e29cd654384a05e32a3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6723188c42ca3b34a9fce634d7a0ecc9ccd5cd56"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e94f5323c41f32a74160378c3b19850d1f203ad5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff287df16a1a58aca78b08d1f3ee09fc44da0351"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53138.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53138"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "drm/amd/display: Bound VBIOS record-chain walk loops"
}