{
  "cveId": "CVE-2024-36943",
  "url": "https://patchblox.com/security/cve/CVE-2024-36943",
  "summary": "CVE-2024-36943 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-36943, released May 30, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  fs/proc/task_mmu: fix loss of young/dirty bits d...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  fs/proc/task_mmu: fix loss of young/dirty bits during pagemap scan  make_uffd_wp_pte() was previously doing:    pte = ptep_get(ptep);   ptep_modify_prot_start(ptep);   pte = pte_mkuffd_wp(pte);   ptep_modify_prot_commit(ptep, pte);  But if another thread accessed or dirtied the pte between the first 2 calls, this could lead to loss of that information.  Since ptep_modify_prot_start() gets and clears atomically, the following is the correct pattern and prevents any possible race.  Any access after the first call would see an invalid pte and cause a fault:    pte = ptep_modify_prot_start(ptep);   pte = pte_mkuffd_wp(pte);   ptep_modify_prot_commit(ptep, pte);",
  "published": "2024-05-30T16:15:17Z",
  "severity": "medium",
  "cvss": 4.7,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00182,
  "epssPercentile": 0.07856,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.8.11-1",
      "fix": "DEBIAN-CVE-2024-36943",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-36943",
      "released": "2024-05-30T16:15:17Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.8.11-1",
      "fix": "DEBIAN-CVE-2024-36943",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-36943",
      "released": "2024-05-30T16:15:17Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}