{
  "cveId": "CVE-2024-27066",
  "url": "https://patchblox.com/security/cve/CVE-2024-27066",
  "summary": "CVE-2024-27066 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-27066, released May 1, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  virtio: packed: fix unmap leak for indirect desc...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  virtio: packed: fix unmap leak for indirect desc table  When use_dma_api and premapped are true, then the do_unmap is false.  Because the do_unmap is false, vring_unmap_extra_packed is not called by detach_buf_packed.    if (unlikely(vq-\u003Edo_unmap)) {                 curr = id;                 for (i = 0; i \u003C state-\u003Enum; i\u002B\u002B) {                         vring_unmap_extra_packed(vq,                                                  \u0026vq-\u003Epacked.desc_extra[curr]);                         curr = vq-\u003Epacked.desc_extra[curr].next;                 }   }  So the indirect desc table is not unmapped. This causes the unmap leak.  So here, we check vq-\u003Euse_dma_api instead. Synchronously, dma info is updated based on use_dma_api judgment  This bug does not occur, because no driver use the premapped with indirect.",
  "published": "2024-05-01T13:15:50Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00596,
  "epssPercentile": 0.48749,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.7.12-1",
      "fix": "DEBIAN-CVE-2024-27066",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-27066",
      "released": "2024-05-01T13:15:50Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.7.12-1",
      "fix": "DEBIAN-CVE-2024-27066",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-27066",
      "released": "2024-05-01T13:15:50Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}