{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-53313",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-53313"
  ],
  "published": "2026-06-26T19:40:50Z",
  "summary": "drm/amd/display: Avoid NULL dereference in dc_dmub_srv error paths",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Avoid NULL dereference in dc_dmub_srv error paths\n\nIn dc_dmub_srv_log_diagnostic_data() and\ndc_dmub_srv_enable_dpia_trace().\n\nBoth functions check:\n\n  if (!dc_dmub_srv || !dc_dmub_srv->dmub)\n\nand then call DC_LOG_ERROR() inside that block.\n\nDC_LOG_ERROR() uses dc_dmub_srv->ctx internally. So if\ndc_dmub_srv is NULL, the logging itself can dereference a\nNULL pointer and cause a crash.\n\nFix this by splitting the checks.\n\nFirst check if dc_dmub_srv is NULL and return immediately.\nThen check dc_dmub_srv->dmub and log the error only when\ndc_dmub_srv is valid.\n\nFixes the below:\n../display/dc/dc_dmub_srv.c:962 dc_dmub_srv_log_diagnostic_data() error: we previously assumed 'dc_dmub_srv' could be null (see line 961)\n../display/dc/dc_dmub_srv.c:1167 dc_dmub_srv_enable_dpia_trace() error: we previously assumed 'dc_dmub_srv' could be null (see line 1166)",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": null,
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-53313"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a71fdbd6e8289e2725d33a9873833459f3b1824f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2ab18de5ebb11c76bfc8087c5a09fbcccd0dea8a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b37a978e6d8c33fbfa4abc5dcca4c7cfc6d01f22"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4ae3e16f4b3bf64140f773629b765d605ee079a9"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-07T15:43:32Z"
  }
}