{
  "cveId": "CVE-2026-46017",
  "url": "https://patchblox.com/security/cve/CVE-2026-46017",
  "summary": "CVE-2026-46017 is fixed in linux on 1 platform by DEBIAN-CVE-2026-46017 (version 7.0.4-1), released May 27, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "mm: fix deferred split queue races during migration",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mm: fix deferred split queue races during migration  migrate_folio_move() records the deferred split queue state from src and replays it on dst.  Replaying it after remove_migration_ptes(src, dst, 0) makes dst visible before it is requeued, so a concurrent rmap-removal path can mark dst partially mapped and trip the WARN in deferred_split_folio().  Move the requeue before remove_migration_ptes() so dst is back on the deferred split queue before it becomes visible again.  Because migration still holds dst locked at that point, teach deferred_split_scan() to requeue a folio when folio_trylock() fails.  Otherwise a fully mapped underused folio can be dequeued by the shrinker and silently lost from split_queue.  [ziy@nvidia.com: move the comment]",
  "published": "2026-05-27T14:17:20Z",
  "severity": "Moderate",
  "cvss": 7,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
  "epss": 0.00105,
  "epssPercentile": 0.01058,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-46017",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.0.4-1",
      "fix": "DEBIAN-CVE-2026-46017",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-46017",
      "released": "2026-05-27T17:38:13Z"
    }
  ],
  "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"
  }
}