nouveau/dmem: Fix vulnerability in migrate_to_ram upon copy error

{
  "id": "91d4031256862bd64ac2915d9081a32da3bdacfcf63440b6fb1ec1101b49fc1f",
  "url": "https://osv.dev/vulnerability/CVE-2024-50096",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "nouveau/dmem: Fix vulnerability in migrate_to_ram upon copy error",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: nouveau/dmem: Fix vulnerability in migrate_to_ram upon copy error The `nouveau_dmem_copy_one` function ensures that the copy push command is sent to the device firmware but does not track whether it was executed successfully. In the case of a copy error (e.g., firmware or hardware failure), the copy push command will be sent via the firmware channel, and `nouveau_dmem_copy_one` will likely report success, leading to the `migrate_to_ram` function returning a dirty HIGH_USER page to the user. This can result in a security vulnerability, as a HIGH_USER page that may contain sensitive or corrupted data could be returned to the user. To prevent this vulnerability, we allocate a zero page. Thus, in case of an error, a non-dirty (zero) page will be returned to the user.",
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      "modified": "2026-10-28T02:30:32.238863844Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/614bfb2050982d23d53d0d51c4079dba0437c883",
        "https://git.kernel.org/stable/c/697e3ddcf1f8b68bd531fc34eead27c000bdf3e1",
        "https://git.kernel.org/stable/c/73f75d2b5aee5a735cf64b8ab4543d5c20dbbdd9",
        "https://git.kernel.org/stable/c/835745a377a4519decd1a36d6b926e369b3033e2",
        "https://git.kernel.org/stable/c/8c3de9282dde21ce3c1bf1bde3166a4510547aa9",
        "https://git.kernel.org/stable/c/ab4d113b6718b076046018292f821d5aa4b844f8",
        "https://git.kernel.org/stable/c/fd9bb7e996bab9b9049fffe3f3d3b50dee191d27",
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50096.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-50096",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 498824,
  "published_at": "2024-11-05T17:04:58.689+00:00"
}