{
  "cveId": "CVE-2022-48675",
  "url": "https://patchblox.com/security/cve/CVE-2022-48675",
  "summary": "CVE-2022-48675 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48675, released May 3, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  IB/core: Fix a nested dead lock as part of ODP f...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  IB/core: Fix a nested dead lock as part of ODP flow  Fix a nested dead lock as part of ODP flow by using mmput_async().  From the below call trace [1] can see that calling mmput() once we have the umem_odp-\u003Eumem_mutex locked as required by ib_umem_odp_map_dma_and_lock() might trigger in the same task the exit_mmap()-\u003E__mmu_notifier_release()-\u003Emlx5_ib_invalidate_range() which may dead lock when trying to lock the same mutex.  Moving to use mmput_async() will solve the problem as the above exit_mmap() flow will be called in other task and will be executed once the lock will be available.  [1] [64843.077665] task:kworker/u133:2  state:D stack:    0 pid:80906 ppid: 2 flags:0x00004000 [64843.077672] Workqueue: mlx5_ib_page_fault mlx5_ib_eqe_pf_action [mlx5_ib] [64843.077719] Call Trace: [64843.077722]  \u003CTASK\u003E [64843.077724]  __schedule\u002B0x23d/0x590 [64843.077729]  schedule\u002B0x4e/0xb0 [64843.077735]  schedule_preempt_disabled\u002B0xe/0x10 [64843.077740]  __mutex_lock.constprop.0\u002B0x263/0x490 [64843.077747]  __mutex_lock_slowpath\u002B0x13/0x20 [64843.077752]  mutex_lock\u002B0x34/0x40 [64843.077758]  mlx5_ib_invalidate_range\u002B0x48/0x270 [mlx5_ib] [64843.077808]  __mmu_notifier_release\u002B0x1a4/0x200 [64843.077816]  exit_mmap\u002B0x1bc/0x200 [64843.077822]  ? walk_page_range\u002B0x9c/0x120 [64843.077828]  ? __cond_resched\u002B0x1a/0x50 [64843.077833]  ? mutex_lock\u002B0x13/0x40 [64843.077839]  ? uprobe_clear_state\u002B0xac/0x120 [64843.077860]  mmput\u002B0x5f/0x140 [64843.077867]  ib_umem_odp_map_dma_and_lock\u002B0x21b/0x580 [ib_core] [64843.077931]  pagefault_real_mr\u002B0x9a/0x140 [mlx5_ib] [64843.077962]  pagefault_mr\u002B0xb4/0x550 [mlx5_ib] [64843.077992]  pagefault_single_data_segment.constprop.0\u002B0x2ac/0x560 [mlx5_ib] [64843.078022]  mlx5_ib_eqe_pf_action\u002B0x528/0x780 [mlx5_ib] [64843.078051]  process_one_work\u002B0x22b/0x3d0 [64843.078059]  worker_thread\u002B0x53/0x410 [64843.078065]  ? process_one_work\u002B0x3d0/0x3d0 [64843.078073]  kthread\u002B0x12a/0x150 [64843.078079]  ? set_kthread_struct\u002B0x50/0x50 [64843.078085]  ret_from_fork\u002B0x22/0x30 [64843.078093]  \u003C/TASK\u003E",
  "published": "2024-05-03T15:15:07Z",
  "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": 0.00178,
  "epssPercentile": 0.07458,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.19.11-1",
      "fix": "DEBIAN-CVE-2022-48675",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48675",
      "released": "2024-05-03T15:15:07Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.19.11-1",
      "fix": "DEBIAN-CVE-2022-48675",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48675",
      "released": "2024-05-03T15:15:07Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.19.11-1",
      "fix": "DEBIAN-CVE-2022-48675",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48675",
      "released": "2024-05-03T15:15:07Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}