{
  "threat_severity" : "Low",
  "public_date" : "2025-04-16T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: x86/mm: Fix flush_tlb_range() when used for zapping normal PMDs",
    "id" : "2360230",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2360230"
  },
  "cvss3" : {
    "cvss3_base_score" : "3.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
    "status" : "verified"
  },
  "cwe" : "CWE-763",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nx86/mm: Fix flush_tlb_range() when used for zapping normal PMDs\nOn the following path, flush_tlb_range() can be used for zapping normal\nPMD entries (PMD entries that point to page tables) together with the PTE\nentries in the pointed-to page table:\ncollapse_pte_mapped_thp\npmdp_collapse_flush\nflush_tlb_range\nThe arm64 version of flush_tlb_range() has a comment describing that it can\nbe used for page table removal, and does not use any last-level\ninvalidation optimizations. Fix the X86 version by making it behave the\nsame way.\nCurrently, X86 only uses this information for the following two purposes,\nwhich I think means the issue doesn't have much impact:\n- In native_flush_tlb_multi() for checking if lazy TLB CPUs need to be\nIPI'd to avoid issues with speculative page table walks.\n- In Hyper-V TLB paravirtualization, again for lazy TLB stuff.\nThe patch \"x86/mm: only invalidate final translations with INVLPGB\" which\nis currently under review (see\n<https://lore.kernel.org/all/20241230175550.4046587-13-riel@surriel.com/>)\nwould probably be making the impact of this a lot worse." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2025-10-27T00:00:00Z",
    "advisory" : "RHSA-2025:19102",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-553.81.1.el8_10"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2025-22045\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-22045\nhttps://lore.kernel.org/linux-cve-announce/2025041601-CVE-2025-22045-049d@gregkh/T" ],
  "name" : "CVE-2025-22045",
  "csaw" : false
}