{
  "cveId": "CVE-2023-52980",
  "url": "https://patchblox.com/security/cve/CVE-2023-52980",
  "summary": "CVE-2023-52980 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-52980, released March 27, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  block: ublk: extending queue_size to fix overflo...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  block: ublk: extending queue_size to fix overflow  When validating drafted SPDK ublk target, in a case that assigning large queue depth to multiqueue ublk device, ublk target would run into a weird incorrect state. During rounds of review and debug, An overflow bug was found in ublk driver.  In ublk_cmd.h, UBLK_MAX_QUEUE_DEPTH is 4096 which means each ublk queue depth can be set as large as 4096. But when setting qd for a ublk device, sizeof(struct ublk_queue) \u002B depth * sizeof(struct ublk_io) will be larger than 65535 if qd is larger than 2728. Then queue_size is overflowed, and ublk_get_queue() references a wrong pointer position. The wrong content of ublk_queue elements will lead to out-of-bounds memory access.  Extend queue_size in ublk_device as \u0022unsigned int\u0022.",
  "published": "2025-03-27T17:15:45Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00249,
  "epssPercentile": 0.16329,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.11-1",
      "fix": "DEBIAN-CVE-2023-52980",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52980",
      "released": "2025-03-27T17:15:45Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.11-1",
      "fix": "DEBIAN-CVE-2023-52980",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52980",
      "released": "2025-03-27T17:15:45Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.11-1",
      "fix": "DEBIAN-CVE-2023-52980",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52980",
      "released": "2025-03-27T17:15:45Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}