{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-52811",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-52811"
  ],
  "published": "2024-05-21T15:34:20Z",
  "summary": "scsi: ibmvfc: Remove BUG_ON in the case of an empty event pool",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ibmvfc: Remove BUG_ON in the case of an empty event pool\n\nIn practice the driver should never send more commands than are allocated\nto a queue's event pool. In the unlikely event that this happens, the code\nasserts a BUG_ON, and in the case that the kernel is not configured to\ncrash on panic returns a junk event pointer from the empty event list\ncausing things to spiral from there. This BUG_ON is a historical artifact\nof the ibmvfc driver first being upstreamed, and it is well known now that\nthe use of BUG_ON is bad practice except in the most unrecoverable\nscenario. There is nothing about this scenario that prevents the driver\nfrom recovering and carrying on.\n\nRemove the BUG_ON in question from ibmvfc_get_event() and return a NULL\npointer in the case of an empty event pool. Update all call sites to\nibmvfc_get_event() to check for a NULL pointer and perfrom the appropriate\nfailure or recovery action.",
  "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": "6.1.64",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-52811"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e1d1f79b1929dce470a5dc9281c574cd58e8c6c0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/88984ec4792766df5a9de7a2ff2b5f281f94c7d4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d2af4ef80601224b90630c1ddc7cd2c7c8ab4dd8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8bbe784c2ff28d56ca0c548aaf3e584edc77052d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b39f2d10b86d0af353ea339e5815820026bca48f"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}