{
  "cveId": "CVE-2024-42233",
  "url": "https://patchblox.com/security/cve/CVE-2024-42233",
  "summary": "CVE-2024-42233 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-42233, released August 7, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  filemap: replace pte_offset_map() with pte_offse...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  filemap: replace pte_offset_map() with pte_offset_map_nolock()  The vmf-\u003Eptl in filemap_fault_recheck_pte_none() is still set from handle_pte_fault().  But at the same time, we did a pte_unmap(vmf-\u003Epte).  After a pte_unmap(vmf-\u003Epte) unmap and rcu_read_unlock(), the page table may be racily changed and vmf-\u003Eptl maybe fails to protect the actual page table.  Fix this by replacing pte_offset_map() with pte_offset_map_nolock().  As David said, the PTL pointer might be stale so if we continue to use it infilemap_fault_recheck_pte_none(), it might trigger UAF.  Also, if the PTL fails, the issue fixed by commit 58f327f2ce80 (\u0022filemap: avoid unnecessary major faults in filemap_fault()\u0022) might reappear.",
  "published": "2024-08-07T16:15:46Z",
  "severity": "low",
  "cvss": 3.3,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
  "epss": 0.00192,
  "epssPercentile": 0.08928,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.9.10-1",
      "fix": "DEBIAN-CVE-2024-42233",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-42233",
      "released": "2024-08-07T16:15:46Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.9.10-1",
      "fix": "DEBIAN-CVE-2024-42233",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-42233",
      "released": "2024-08-07T16:15:46Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}