{
  "cveId": "CVE-2026-53294",
  "url": "https://patchblox.com/security/cve/CVE-2026-53294",
  "summary": "CVE-2026-53294 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-53294, released June 27, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "mailbox: mailbox-test: don\u0027t free the reused channel",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mailbox: mailbox-test: don\u0027t free the reused channel  The RX channel can be aliased to the TX channel if it has a different MMIO. This special case needs to be handled when freeing the channels otherwise a double-free occurs.",
  "published": "2026-06-26T20:17:22Z",
  "severity": "Moderate",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00176,
  "epssPercentile": 0.0713,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53294",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.176-1",
      "fix": "DEBIAN-CVE-2026-53294",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53294",
      "released": "2026-06-27T17:39:39Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.94-1",
      "fix": "DEBIAN-CVE-2026-53294",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53294",
      "released": "2026-06-27T17:39:39Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.0.10-1",
      "fix": "DEBIAN-CVE-2026-53294",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53294",
      "released": "2026-06-27T17:39:39Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}