{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-43171",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-43171"
  ],
  "published": "2026-05-06T11:29:17Z",
  "summary": "EFI/CPER: don't dump the entire memory region",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nEFI/CPER: don't dump the entire memory region\n\nThe current logic at cper_print_fw_err() doesn't check if the\nerror record length is big enough to handle offset. On a bad firmware,\nif the ofset is above the actual record, length -= offset will\nunderflow, making it dump the entire memory.\n\nThe end result can be:\n\n - the logic taking a lot of time dumping large regions of memory;\n - data disclosure due to the memory dumps;\n - an OOPS, if it tries to dump an unmapped memory region.\n\nFix it by checking if the section length is too small before doing\na hex dump.\n\n[ rjw: Subject tweaks ]",
  "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": "6.1.165",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43171"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/02de64ab54b4bb0f1b21bb324aeff3b08612be33"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0e09b522f2622841389c3b2f9ac4969e35c0809d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/64ae5aaa7ac93c83da456039e8ec747bfa8a7cff"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5a9b1dda8481b82851a655c3bcc5b44879b95334"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7780c0bad2a3a70a8c0113a33c02f4151d901eb3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a8419f5f2c5f2d80848ddabb2b95cf0da84a5f91"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/54e131db4cdffd946db890ff33ff2647053fd4f6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/55cc6fe5716f678f06bcb95140882dfa684464ec"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}