{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-47748",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-47748"
  ],
  "published": "2024-10-21T12:16:24Z",
  "summary": "vhost_vdpa: assign irq bypass producer token correctly",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvhost_vdpa: assign irq bypass producer token correctly\n\nWe used to call irq_bypass_unregister_producer() in\nvhost_vdpa_setup_vq_irq() which is problematic as we don't know if the\ntoken pointer is still valid or not.\n\nActually, we use the eventfd_ctx as the token so the life cycle of the\ntoken should be bound to the VHOST_SET_VRING_CALL instead of\nvhost_vdpa_setup_vq_irq() which could be called by set_status().\n\nFixing this by setting up irq bypass producer's token when handling\nVHOST_SET_VRING_CALL and un-registering the producer before calling\nvhost_vring_ioctl() to prevent a possible use after free as eventfd\ncould have been released in vhost_vring_ioctl(). And such registering\nand unregistering will only be done if DRIVER_OK is set.",
  "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": "6.1.113",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-47748"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0c170b1e918b9afac25e2bbd01eaa2bfc0ece8c0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/927a2580208e0f9b0b47b08f1c802b7233a7ba3c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ec5f1b54ceb23475049ada6e7a43452cf4df88d1"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ca64edd7ae93402af2596a952e0d94d545e2b9c0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fae9b1776f53aab93ab345bdbf653b991aed717d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7cf2fb51175cafe01df8c43fa15a06194a59c6e2"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/02e9e9366fefe461719da5d173385b6685f70319"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T11:52:36Z"
  }
}