CVE-2022-48840 (GCVE-0-2022-48840)

Vulnerability from cvelistv5 – Published: 2024-07-16 12:25 – Updated: 2026-05-11 18:48
VLAI
Title
iavf: Fix hang during reboot/shutdown
Summary
In the Linux kernel, the following vulnerability has been resolved: iavf: Fix hang during reboot/shutdown Recent commit 974578017fc1 ("iavf: Add waiting so the port is initialized in remove") 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's 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+0x2d1/0x830 [52626.007400] schedule+0x35/0xa0 [52626.010545] schedule_hrtimeout_range_clock+0x83/0x100 [52626.020046] usleep_range+0x5b/0x80 [52626.023540] iavf_remove+0x63/0x5b0 [iavf] [52626.027645] pci_device_remove+0x3b/0xc0 [52626.031572] device_release_driver_internal+0x103/0x1f0 [52626.036805] pci_stop_bus_device+0x72/0xa0 [52626.040904] pci_stop_and_remove_bus_device+0xe/0x20 [52626.045870] pci_iov_remove_virtfn+0xba/0x120 [52626.050232] sriov_disable+0x2f/0xe0 [52626.053813] ice_free_vfs+0x7c/0x340 [ice] [52626.057946] ice_remove+0x220/0x240 [ice] [52626.061967] ice_shutdown+0x16/0x50 [ice] [52626.065987] pci_device_shutdown+0x34/0x60 [52626.070086] device_shutdown+0x165/0x1c5 [52626.074011] kernel_restart+0xe/0x30 [52626.077593] __do_sys_reboot+0x1d2/0x210 [52626.093815] do_syscall_64+0x5b/0x1a0 [52626.097483] entry_SYSCALL_64_after_hwframe+0x65/0xca
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 16:56 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 85aa76066fef64de8a48d0da6b4071ceac455a94 , < 80974bb730270199c6fcb189af04d5945b87e813 (git)
Affected: 7b9515172ab4d4c6ac0eae4b71013ee6ce932205 , < 4477b9a4193b35eb3a8afd2adf2d42add2f88d57 (git)
Affected: 974578017fc1fdd06cea8afb9dfa32602e8529ed , < b04683ff8f0823b869c219c78ba0d974bddea0b5 (git)
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Linux Linux Affected: 5.15.27 , < 5.15.31 (semver)
Affected: 5.16.13 , < 5.16.17 (semver)
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            "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: iavf: corrige el bloqueo durante el reinicio/apagado. El commit reciente 974578017fc1 (\"iavf: agrega espera para que el puerto se inicialice en eliminar\") agrega un bucle de espera al comienzo de iavf_remove() para garantizar que la inicializaci\u00f3n del puerto finalice antes de cancelar el registro del dispositivo de red. Esto provoca una regresi\u00f3n en el escenario de reinicio/apagado porque en este caso se llama a la devoluci\u00f3n de llamada iavf_shutdown() y esta devoluci\u00f3n de llamada desconecta el dispositivo, lo desactiva si se est\u00e1 ejecutando y establece su estado en __IAVF_REMOVE. Posteriormente se llama a la devoluci\u00f3n de llamada de apagado del controlador PF asociado (por ejemplo, ice_shutdown). Esa devoluci\u00f3n de llamada llama, entre otras cosas, a sriov_disable() que llama indirectamente a iavf_remove() (consulte el seguimiento de la pila a continuaci\u00f3n). Como el estado del adaptador ya es __IAVF_REMOVE, el bucle mencionado no tiene fin y el proceso de apagado se bloquea. El parche soluciona este problema verificando el estado del adaptador al comienzo de iavf_remove() y omite el resto de la funci\u00f3n si el adaptador ya est\u00e1 en estado de eliminaci\u00f3n (el apagado est\u00e1 en curso). Reproductor: 1. Cree VF en PF controlado por el controlador ice o i40e 2. Aseg\u00farese de que el VF est\u00e9 vinculado al controlador iavf 3. Reinicie [52625.981294] sysrq: SysRq: Mostrar estado bloqueado [52625.988377] tarea: estado de reinicio: pila D: 0 pid:17359 ppid: 1 f2 [52625.996732] Seguimiento de llamadas: [52625.999187] __schedule+0x2d1/0x830 [52626.007400] Schedule+0x35/0xa0 [52626.010545] Schedule_hrtimeout_range_clock+0x83/0x100 2626.020046] usleep_range+0x5b/0x80 [52626.023540] iavf_remove+ 0x63/0x5b0 [iavf] [52626.027645] pci_device_remove+0x3b/0xc0 [52626.031572] device_release_driver_internal+0x103/0x1f0 [52626.036805] pci_stop_bus_device+0x72/0xa0 [52626. 040904] pci_stop_and_remove_bus_device+0xe/0x20 [52626.045870] pci_iov_remove_virtfn+0xba/0x120 [52626.050232] sriov_disable +0x2f/0xe0 [52626.053813] ice_free_vfs+0x7c/0x340 [hielo] [52626.057946] ice_remove+0x220/0x240 [hielo] [52626.061967] ice_shutdown+0x16/0x50 [52626.06598 7] pci_device_shutdown+0x34/0x60 [52626.070086] dispositivo_shutdown+ 0x165/0x1c5 [52626.074011] kernel_restart+0xe/0x30 [52626.077593] __do_sys_reboot+0x1d2/0x210 [52626.093815] do_syscall_64+0x5b/0x1a0 [52626.097483] entrada_SYSCALL_64_after_hwframe+0x65/0xca"
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        "vulnStatus": "Modified",
        "weaknesses": [
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                "lang": "en",
                "value": "CWE-835"
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            ],
            "source": "nvd@nist.gov",
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      "current_release_date": "2026-08-19T10:25:11+00:00",
      "cve": "CVE-2022-48840",
      "id": "CVE-2022-48840",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "150",
      "product_status:known_not_affected": "48",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: iavf: Fix hang during reboot/shutdown",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-48840.json",
      "version": "3"
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                    "id": "CVE-2022-48840",
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              "programFiles": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niavf: Fix hang during reboot/shutdown\n\nRecent commit 974578017fc1 (\"iavf: Add waiting so the port is\ninitialized in remove\") adds a wait-loop at the beginning of\niavf_remove() to ensure that port initialization is finished\nprior unregistering net device. This causes a regression\nin reboot/shutdown scenario because in this case callback\niavf_shutdown() is called and this callback detaches the device,\nmakes it down if it is running and sets its state to __IAVF_REMOVE.\nLater shutdown callback of associated PF driver (e.g. ice_shutdown)\nis called. That callback calls among other things sriov_disable()\nthat calls indirectly iavf_remove() (see stack trace below).\nAs the adapter state is already __IAVF_REMOVE then the mentioned\nloop is end-less and shutdown process hangs.\n\nThe patch fixes this by checking adapter\u0027s state at the beginning\nof iavf_remove() and skips the rest of the function if the adapter\nis already in remove state (shutdown is in progress).\n\nReproducer:\n1. Create VF on PF driven by ice or i40e driver\n2. Ensure that the VF is bound to iavf driver\n3. Reboot\n\n[52625.981294] sysrq: SysRq : Show Blocked State\n[52625.988377] task:reboot          state:D stack:    0 pid:17359 ppid:     1 f2\n[52625.996732] Call Trace:\n[52625.999187]  __schedule+0x2d1/0x830\n[52626.007400]  schedule+0x35/0xa0\n[52626.010545]  schedule_hrtimeout_range_clock+0x83/0x100\n[52626.020046]  usleep_range+0x5b/0x80\n[52626.023540]  iavf_remove+0x63/0x5b0 [iavf]\n[52626.027645]  pci_device_remove+0x3b/0xc0\n[52626.031572]  device_release_driver_internal+0x103/0x1f0\n[52626.036805]  pci_stop_bus_device+0x72/0xa0\n[52626.040904]  pci_stop_and_remove_bus_device+0xe/0x20\n[52626.045870]  pci_iov_remove_virtfn+0xba/0x120\n[52626.050232]  sriov_disable+0x2f/0xe0\n[52626.053813]  ice_free_vfs+0x7c/0x340 [ice]\n[52626.057946]  ice_remove+0x220/0x240 [ice]\n[52626.061967]  ice_shutdown+0x16/0x50 [ice]\n[52626.065987]  pci_device_shutdown+0x34/0x60\n[52626.070086]  device_shutdown+0x165/0x1c5\n[52626.074011]  kernel_restart+0xe/0x30\n[52626.077593]  __do_sys_reboot+0x1d2/0x210\n[52626.093815]  do_syscall_64+0x5b/0x1a0\n[52626.097483]  entry_SYSCALL_64_after_hwframe+0x65/0xca"
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        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-48840",
        "datePublished": "2024-07-16T12:25:11.173Z",
        "dateReserved": "2024-07-16T11:38:08.909Z",
        "dateUpdated": "2026-05-11T18:48:11.010Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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