{
  "cveId": "CVE-2022-48800",
  "url": "https://patchblox.com/security/cve/CVE-2022-48800",
  "summary": "CVE-2022-48800 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48800, released July 16, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  mm: vmscan: remove deadlock due to throttling fa...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mm: vmscan: remove deadlock due to throttling failing to make progress  A soft lockup bug in kcompactd was reported in a private bugzilla with the following visible in dmesg;    watchdog: BUG: soft lockup - CPU#33 stuck for 26s! [kcompactd0:479]   watchdog: BUG: soft lockup - CPU#33 stuck for 52s! [kcompactd0:479]   watchdog: BUG: soft lockup - CPU#33 stuck for 78s! [kcompactd0:479]   watchdog: BUG: soft lockup - CPU#33 stuck for 104s! [kcompactd0:479]  The machine had 256G of RAM with no swap and an earlier failed allocation indicated that node 0 where kcompactd was run was potentially unreclaimable;    Node 0 active_anon:29355112kB inactive_anon:2913528kB active_file:0kB     inactive_file:0kB unevictable:64kB isolated(anon):0kB isolated(file):0kB     mapped:8kB dirty:0kB writeback:0kB shmem:26780kB shmem_thp:     0kB shmem_pmdmapped: 0kB anon_thp: 23480320kB writeback_tmp:0kB     kernel_stack:2272kB pagetables:24500kB all_unreclaimable? yes  Vlastimil Babka investigated a crash dump and found that a task migrating pages was trying to drain PCP lists;    PID: 52922  TASK: ffff969f820e5000  CPU: 19  COMMAND: \u0022kworker/u128:3\u0022   Call Trace:      __schedule      schedule      schedule_timeout      wait_for_completion      __flush_work      __drain_all_pages      __alloc_pages_slowpath.constprop.114      __alloc_pages      alloc_migration_target      migrate_pages      migrate_to_node      do_migrate_pages      cpuset_migrate_mm_workfn      process_one_work      worker_thread      kthread      ret_from_fork  This failure is specific to CONFIG_PREEMPT=n builds.  The root of the problem is that kcompact0 is not rescheduling on a CPU while a task that has isolated a large number of the pages from the LRU is waiting on kcompact0 to reschedule so the pages can be released.  While shrink_inactive_list() only loops once around too_many_isolated, reclaim can continue without rescheduling if sc-\u003Eskipped_deactivate == 1 which could happen if there was no file LRU and the inactive anon list was not low.",
  "published": "2024-07-16T12:15:04Z",
  "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": 0.00157,
  "epssPercentile": 0.0487,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.16.10-1",
      "fix": "DEBIAN-CVE-2022-48800",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48800",
      "released": "2024-07-16T12:15:04Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.16.10-1",
      "fix": "DEBIAN-CVE-2022-48800",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48800",
      "released": "2024-07-16T12:15:04Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.16.10-1",
      "fix": "DEBIAN-CVE-2022-48800",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48800",
      "released": "2024-07-16T12:15:04Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}