virtio-mmio: don't break lifecycle of vm_dev

{
  "id": "d3b05b3598ed016d837753aecad28401cc3df6376f9ce025475bc0b6578cc45f",
  "url": "https://osv.dev/vulnerability/CVE-2023-53515",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "virtio-mmio: don't break lifecycle of vm_dev",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: virtio-mmio: don't break lifecycle of vm_dev vm_dev has a separate lifecycle because it has a 'struct device' embedded. Thus, having a release callback for it is correct. Allocating the vm_dev struct with devres totally breaks this protection, though. Instead of waiting for the vm_dev release callback, the memory is freed when the platform_device is removed. Resulting in a use-after-free when finally the callback is to be called. To easily see the problem, compile the kernel with CONFIG_DEBUG_KOBJECT_RELEASE and unbind with sysfs. The fix is easy, don't use devres in this case. Found during my research about object lifetime problems.",
    "evidence": "osv:CVE-2023-53515",
    "products": [
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      "modified": "2026-10-28T02:30:37.187299096Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/2dcb368fe5a8eee498ca75c93a18ce2f3b0d6a8e",
        "https://git.kernel.org/stable/c/3ff54d904fafabd0912796785e53cce4e69ca123",
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        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53515.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53515",
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  "source_id": "core-osv",
  "document_id": 504093,
  "published_at": "2025-10-01T11:46:03.192+00:00"
}