{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.10-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  net: ena: PHC: Fix potential use-after-free in get_timestamp  Move the phc-\u003eactive check and resp pointer assignment to after acquiring the spinlock. Previously, phc-\u003eactive was checked without holding the lock, and resp was cached from ena_dev-\u003ephc.virt_addr before the lock was acquired.  If ena_com_phc_destroy() runs between the lockless active check and the lock acquisition, it sets active=false, releases the lock, frees the DMA memory, and sets virt_addr=NULL. The get_timestamp path would then read a NULL virt_addr and dereference it.  With both the active check and the pointer read under the lock, destroy cannot free the memory while get_timestamp is using it.",
  "id": "DEBIAN-CVE-2026-52971",
  "modified": "2026-09-14T16:47:34.709561948Z",
  "published": "2026-06-24T17:17:07.630Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-52971"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-52971"
  ]
}