{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-40160",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-40160"
  ],
  "published": "2025-11-12T10:24:45Z",
  "summary": "xen/events: Return -EEXIST for bound VIRQs",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen/events: Return -EEXIST for bound VIRQs\n\nChange find_virq() to return -EEXIST when a VIRQ is bound to a\ndifferent CPU than the one passed in.  With that, remove the BUG_ON()\nfrom bind_virq_to_irq() to propogate the error upwards.\n\nSome VIRQs are per-cpu, but others are per-domain or global.  Those must\nbe bound to CPU0 and can then migrate elsewhere.  The lookup for\nper-domain and global will probably fail when migrated off CPU 0,\nespecially when the current CPU is tracked.  This now returns -EEXIST\ninstead of BUG_ON().\n\nA second call to bind a per-domain or global VIRQ is not expected, but\nmake it non-fatal to avoid trying to look up the irq, since we don't\nknow which per_cpu(virq_to_irq) it will be in.",
  "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": null,
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-40160"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/612ef6056855c0aacb9b25d1d853c435754483f7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a1e7f07ae6b594f1ba5be46c6125b43bc505c5aa"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f81db055a793eca9d05f79658ff62adafb41d664"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/07ce121d93a5e5fb2440a24da3dbf408fcee978e"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}