{
  "cveId": "CVE-2026-23211",
  "url": "https://patchblox.com/security/cve/CVE-2026-23211",
  "summary": "CVE-2026-23211 is fixed in linux on 1 platform by DEBIAN-CVE-2026-23211 (version 6.18.9-1), released February 18, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  mm, swap: restore swap_space attr aviod kernel p...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mm, swap: restore swap_space attr aviod kernel panic  commit 8b47299a411a (\u0022mm, swap: mark swap address space ro and add context debug check\u0022) made the swap address space read-only.  It may lead to kernel panic if arch_prepare_to_swap returns a failure under heavy memory pressure as follows,  el1_abort\u002B0x40/0x64 el1h_64_sync_handler\u002B0x48/0xcc el1h_64_sync\u002B0x84/0x88 errseq_set\u002B0x4c/0xb8 (P) __filemap_set_wb_err\u002B0x20/0xd0 shrink_folio_list\u002B0xc20/0x11cc evict_folios\u002B0x1520/0x1be4 try_to_shrink_lruvec\u002B0x27c/0x3dc shrink_one\u002B0x9c/0x228 shrink_node\u002B0xb3c/0xeac do_try_to_free_pages\u002B0x170/0x4f0 try_to_free_pages\u002B0x334/0x534 __alloc_pages_direct_reclaim\u002B0x90/0x158 __alloc_pages_slowpath\u002B0x334/0x588 __alloc_frozen_pages_noprof\u002B0x224/0x2fc __folio_alloc_noprof\u002B0x14/0x64 vma_alloc_zeroed_movable_folio\u002B0x34/0x44 do_pte_missing\u002B0xad4/0x1040 handle_mm_fault\u002B0x4a4/0x790 do_page_fault\u002B0x288/0x5f8 do_translation_fault\u002B0x38/0x54 do_mem_abort\u002B0x54/0xa8  Restore swap address space as not ro to avoid the panic.",
  "published": "2026-02-18T15:18:42Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00116,
  "epssPercentile": 0.01633,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.18.9-1",
      "fix": "DEBIAN-CVE-2026-23211",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23211",
      "released": "2026-02-18T15:18:42Z"
    }
  ],
  "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"
  }
}