{
  "cveId": "CVE-2023-46837",
  "url": "https://patchblox.com/security/cve/CVE-2023-46837",
  "summary": "CVE-2023-46837 is fixed in xen on 1 platform, first by DEBIAN-CVE-2023-46837, released January 5, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "xen: Arm provides multiple helpers to clean \u0026 invalidate the cache for a given region",
  "description": "Arm provides multiple helpers to clean \u0026 invalidate the cache for a given region.  This is, for instance, used when allocating guest memory to ensure any writes (such as the ones during scrubbing) have reached memory before handing over the page to a guest.  Unfortunately, the arithmetics in the helpers can overflow and would then result to skip the cache cleaning/invalidation.  Therefore there is no guarantee when all the writes will reach the memory.  This undefined behavior was meant to be addressed by XSA-437, but the approach was not sufficient.",
  "published": "2024-01-05T17:15:11Z",
  "severity": "low",
  "cvss": 3.3,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
  "epss": 0.00241,
  "epssPercentile": 0.15292,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "4.17.3\u002B10-g091466ba55-1~deb12u1",
      "fix": "DEBIAN-CVE-2023-46837",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-46837",
      "released": "2024-01-05T17:15:11Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "4.17.3\u002B10-g091466ba55-1",
      "fix": "DEBIAN-CVE-2023-46837",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-46837",
      "released": "2024-01-05T17:15:11Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 14",
      "fixedVersion": "4.17.3\u002B10-g091466ba55-1",
      "fix": "DEBIAN-CVE-2023-46837",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-46837",
      "released": "2024-01-05T17:15:11Z"
    }
  ],
  "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"
  }
}