{
  "cveId": "CVE-2022-48840",
  "url": "https://patchblox.com/security/cve/CVE-2022-48840",
  "summary": "CVE-2022-48840 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48840, 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:  iavf: Fix hang during reboot/shutdown  Recent co...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  iavf: Fix hang during reboot/shutdown  Recent commit 974578017fc1 (\u0022iavf: Add waiting so the port is initialized in remove\u0022) adds a wait-loop at the beginning of iavf_remove() to ensure that port initialization is finished prior unregistering net device. This causes a regression in reboot/shutdown scenario because in this case callback iavf_shutdown() is called and this callback detaches the device, makes it down if it is running and sets its state to __IAVF_REMOVE. Later shutdown callback of associated PF driver (e.g. ice_shutdown) is called. That callback calls among other things sriov_disable() that calls indirectly iavf_remove() (see stack trace below). As the adapter state is already __IAVF_REMOVE then the mentioned loop is end-less and shutdown process hangs.  The patch fixes this by checking adapter\u0027s state at the beginning of iavf_remove() and skips the rest of the function if the adapter is already in remove state (shutdown is in progress).  Reproducer: 1. Create VF on PF driven by ice or i40e driver 2. Ensure that the VF is bound to iavf driver 3. Reboot  [52625.981294] sysrq: SysRq : Show Blocked State [52625.988377] task:reboot          state:D stack:    0 pid:17359 ppid:     1 f2 [52625.996732] Call Trace: [52625.999187]  __schedule\u002B0x2d1/0x830 [52626.007400]  schedule\u002B0x35/0xa0 [52626.010545]  schedule_hrtimeout_range_clock\u002B0x83/0x100 [52626.020046]  usleep_range\u002B0x5b/0x80 [52626.023540]  iavf_remove\u002B0x63/0x5b0 [iavf] [52626.027645]  pci_device_remove\u002B0x3b/0xc0 [52626.031572]  device_release_driver_internal\u002B0x103/0x1f0 [52626.036805]  pci_stop_bus_device\u002B0x72/0xa0 [52626.040904]  pci_stop_and_remove_bus_device\u002B0xe/0x20 [52626.045870]  pci_iov_remove_virtfn\u002B0xba/0x120 [52626.050232]  sriov_disable\u002B0x2f/0xe0 [52626.053813]  ice_free_vfs\u002B0x7c/0x340 [ice] [52626.057946]  ice_remove\u002B0x220/0x240 [ice] [52626.061967]  ice_shutdown\u002B0x16/0x50 [ice] [52626.065987]  pci_device_shutdown\u002B0x34/0x60 [52626.070086]  device_shutdown\u002B0x165/0x1c5 [52626.074011]  kernel_restart\u002B0xe/0x30 [52626.077593]  __do_sys_reboot\u002B0x1d2/0x210 [52626.093815]  do_syscall_64\u002B0x5b/0x1a0 [52626.097483]  entry_SYSCALL_64_after_hwframe\u002B0x65/0xca",
  "published": "2024-07-16T13:15:11Z",
  "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": 0.00237,
  "epssPercentile": 0.14865,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.17.3-1",
      "fix": "DEBIAN-CVE-2022-48840",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48840",
      "released": "2024-07-16T13:15:11Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.17.3-1",
      "fix": "DEBIAN-CVE-2022-48840",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48840",
      "released": "2024-07-16T13:15:11Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.17.3-1",
      "fix": "DEBIAN-CVE-2022-48840",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48840",
      "released": "2024-07-16T13:15:11Z"
    }
  ],
  "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"
  }
}