{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-52494",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-52494"
  ],
  "published": "2024-02-29T16:05:49Z",
  "summary": "bus: mhi: host: Add alignment check for event ring read pointer",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbus: mhi: host: Add alignment check for event ring read pointer\n\nThough we do check the event ring read pointer by \"is_valid_ring_ptr\"\nto make sure it is in the buffer range, but there is another risk the\npointer may be not aligned.  Since we are expecting event ring elements\nare 128 bits(struct mhi_ring_element) aligned, an unaligned read pointer\ncould lead to multiple issues like DoS or ring buffer memory corruption.\n\nSo add a alignment check for event ring read pointer.",
  "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": "6.1.76",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-52494"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/76ed0c6f6418cec6efe6f65a0b91f84be80b72eb"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/94991728c84f8df54fd9eec9b85855ef9057ea08"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2df39ac8f813860f79782807c3f7acff40b3c551"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a9ebfc405fe1be145f414eafadcbf09506082010"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ecf8320111822a1ae5d5fc512953eab46d543d0b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/eff9704f5332a13b08fbdbe0f84059c9e7051d5f"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-07-24T14:40:09Z"
  }
}