{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-71291",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-71291"
  ],
  "published": "2026-05-06T11:32:40Z",
  "summary": "misc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: bcm_vk: Fix possible null-pointer dereferences in bcm_vk_read()\n\nIn the function bcm_vk_read(), the pointer entry is checked, indicating\nthat it can be NULL. If entry is NULL and rc is set to -EMSGSIZE, the\nfollowing code may cause null-pointer dereferences:\n\n  struct vk_msg_blk tmp_msg = entry->to_h_msg[0];\n  set_msg_id(&tmp_msg, entry->usr_msg_id);\n  tmp_msg.size = entry->to_h_blks - 1;\n\nTo prevent these possible null-pointer dereferences, copy to_h_msg,\nusr_msg_id, and to_h_blks from iter into temporary variables, and return\nthese temporary variables to the application instead of accessing them\nthrough a potentially NULL entry.",
  "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-2025-71291"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/741c5a3a0cd893a4218fc0fc8c18403e54fcfb22"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ece3722169ba93734bfd1f06255e8ab7f19fe964"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3842f93e6e29d5cc1dcb9e5bda70587b444bed69"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ba75ecb97d3f4e95d59002c13afb6519205be6cb"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}