{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.4-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  iommufd: Set veventq_depth upper bound  iommufd_veventq_alloc() accepts any !0 veventq_depth from userspace, with an upper bound at U32_MAX.  This leaves a vulnerability where userspace can allocate excessively large queues to exhaust kernel memory reserves.  Cap the veventq_depth (maximum number of entries) to 1 \u003c\u003c 19, matching the maximum number of entries in the SMMUv3 EVTQ (the largest use case today).",
  "id": "DEBIAN-CVE-2026-64291",
  "modified": "2026-09-14T16:47:32.542608849Z",
  "published": "2026-07-25T10:17:09.837Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-64291"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-64291"
  ]
}