{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"
            },
            {
              "fixed": "cbf75cf212ee6e499abc1757fb4b5ae6d70ed0aa"
            },
            {
              "fixed": "3bac01168982ec3e3bf87efdc1807c7933590a85"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.4"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46017.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: fix deferred split queue races during migration\n\nmigrate_folio_move() records the deferred split queue state from src and\nreplays it on dst.  Replaying it after remove_migration_ptes(src, dst, 0)\nmakes dst visible before it is requeued, so a concurrent rmap-removal path\ncan mark dst partially mapped and trip the WARN in deferred_split_folio().\n\nMove the requeue before remove_migration_ptes() so dst is back on the\ndeferred split queue before it becomes visible again.\n\nBecause migration still holds dst locked at that point, teach\ndeferred_split_scan() to requeue a folio when folio_trylock() fails. \nOtherwise a fully mapped underused folio can be dequeued by the shrinker\nand silently lost from split_queue.\n\n[ziy@nvidia.com: move the comment]",
  "id": "CVE-2026-46017",
  "modified": "2026-07-08T05:39:11.397024257Z",
  "published": "2026-05-27T12:56:18.800Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bac01168982ec3e3bf87efdc1807c7933590a85"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cbf75cf212ee6e499abc1757fb4b5ae6d70ed0aa"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46017.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46017"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "mm: fix deferred split queue races during migration"
}