CVE-2024-35968 (GCVE-0-2024-35968)

Vulnerability from cvelistv5 – Published: 2024-05-20 09:41 – Updated: 2026-08-05 11:31
VLAI
Title
pds_core: Fix pdsc_check_pci_health function to use work thread
Summary
In the Linux kernel, the following vulnerability has been resolved: pds_core: Fix pdsc_check_pci_health function to use work thread When the driver notices fw_status == 0xff it tries to perform a PCI reset on itself via pci_reset_function() in the context of the driver's health thread. However, pdsc_reset_prepare calls pdsc_stop_health_thread(), which attempts to stop/flush the health thread. This results in a deadlock because the stop/flush will never complete since the driver called pci_reset_function() from the health thread context. Fix by changing the pdsc_check_pci_health_function() to queue a newly introduced pdsc_pci_reset_thread() on the pdsc's work queue. Unloading the driver in the fw_down/dead state uncovered another issue, which can be seen in the following trace: WARNING: CPU: 51 PID: 6914 at kernel/workqueue.c:1450 __queue_work+0x358/0x440 [...] RIP: 0010:__queue_work+0x358/0x440 [...] Call Trace: <TASK> ? __warn+0x85/0x140 ? __queue_work+0x358/0x440 ? report_bug+0xfc/0x1e0 ? handle_bug+0x3f/0x70 ? exc_invalid_op+0x17/0x70 ? asm_exc_invalid_op+0x1a/0x20 ? __queue_work+0x358/0x440 queue_work_on+0x28/0x30 pdsc_devcmd_locked+0x96/0xe0 [pds_core] pdsc_devcmd_reset+0x71/0xb0 [pds_core] pdsc_teardown+0x51/0xe0 [pds_core] pdsc_remove+0x106/0x200 [pds_core] pci_device_remove+0x37/0xc0 device_release_driver_internal+0xae/0x140 driver_detach+0x48/0x90 bus_remove_driver+0x6d/0xf0 pci_unregister_driver+0x2e/0xa0 pdsc_cleanup_module+0x10/0x780 [pds_core] __x64_sys_delete_module+0x142/0x2b0 ? syscall_trace_enter.isra.18+0x126/0x1a0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fbd9d03a14b [...] Fix this by preventing the devcmd reset if the FW is not running.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-21 15:11 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1e18ec3e9d46e4ad2b6507c3bfc7f59e2ab449a2 , < 38407914d48273d7f8ab765b9243658afe1c3ab6 (git)
Affected: 1e18ec3e9d46e4ad2b6507c3bfc7f59e2ab449a2 , < 81665adf25d28a00a986533f1d3a5df76b79cad9 (git)
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Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 6.8.7 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npds_core: Fix pdsc_check_pci_health function to use work thread\n\nWhen the driver notices fw_status == 0xff it tries to perform a PCI\nreset on itself via pci_reset_function() in the context of the driver\u0027s\nhealth thread. However, pdsc_reset_prepare calls\npdsc_stop_health_thread(), which attempts to stop/flush the health\nthread. This results in a deadlock because the stop/flush will never\ncomplete since the driver called pci_reset_function() from the health\nthread context. Fix by changing the pdsc_check_pci_health_function()\nto queue a newly introduced pdsc_pci_reset_thread() on the pdsc\u0027s\nwork queue.\n\nUnloading the driver in the fw_down/dead state uncovered another issue,\nwhich can be seen in the following trace:\n\nWARNING: CPU: 51 PID: 6914 at kernel/workqueue.c:1450 __queue_work+0x358/0x440\n[...]\nRIP: 0010:__queue_work+0x358/0x440\n[...]\nCall Trace:\n \u003cTASK\u003e\n ? __warn+0x85/0x140\n ? __queue_work+0x358/0x440\n ? report_bug+0xfc/0x1e0\n ? handle_bug+0x3f/0x70\n ? exc_invalid_op+0x17/0x70\n ? asm_exc_invalid_op+0x1a/0x20\n ? __queue_work+0x358/0x440\n queue_work_on+0x28/0x30\n pdsc_devcmd_locked+0x96/0xe0 [pds_core]\n pdsc_devcmd_reset+0x71/0xb0 [pds_core]\n pdsc_teardown+0x51/0xe0 [pds_core]\n pdsc_remove+0x106/0x200 [pds_core]\n pci_device_remove+0x37/0xc0\n device_release_driver_internal+0xae/0x140\n driver_detach+0x48/0x90\n bus_remove_driver+0x6d/0xf0\n pci_unregister_driver+0x2e/0xa0\n pdsc_cleanup_module+0x10/0x780 [pds_core]\n __x64_sys_delete_module+0x142/0x2b0\n ? syscall_trace_enter.isra.18+0x126/0x1a0\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\nRIP: 0033:0x7fbd9d03a14b\n[...]\n\nFix this by preventing the devcmd reset if the FW is not running."
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          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: pds_core: corrige la funci\u00f3n pdsc_check_pci_health para usar el subproceso de trabajo. Cuando el controlador nota fw_status == 0xff, intenta realizar un restablecimiento de PCI sobre s\u00ed mismo a trav\u00e9s de pci_reset_function() en el contexto del subproceso de estado del controlador. . Sin embargo, pdsc_reset_prepare llama a pdsc_stop_health_thread(), que intenta detener/vaciar el hilo de salud. Esto da como resultado un punto muerto porque la parada/vaciado nunca se completar\u00e1 ya que el controlador llam\u00f3 a pci_reset_function() desde el contexto del hilo de salud. Para solucionarlo, cambie pdsc_check_pci_health_function() para poner en cola un pdsc_pci_reset_thread() reci\u00e9n introducido en la cola de trabajo del pdsc. La descarga del controlador en el estado fw_down/dead descubri\u00f3 otro problema, que se puede ver en el siguiente seguimiento: ADVERTENCIA: CPU: 51 PID: 6914 en kernel/workqueue.c:1450 __queue_work+0x358/0x440 [...] RIP: 0010:__queue_work+0x358/0x440 [...] Seguimiento de llamadas: ? __warn+0x85/0x140 ? __queue_work+0x358/0x440? report_bug+0xfc/0x1e0? handle_bug+0x3f/0x70? exc_invalid_op+0x17/0x70? asm_exc_invalid_op+0x1a/0x20? __queue_work+0x358/0x440 queue_work_on+0x28/0x30 pdsc_devcmd_locked+0x96/0xe0 [pds_core] pdsc_devcmd_reset+0x71/0xb0 [pds_core] pdsc_teardown+0x51/0xe0 [pds_core] pdsc_remove+0x106/0x200 [pds_core] pci_device_remove+0x37/0xc0 device_release_driver_internal+0xae /0x140 driver_detach+0x48/0x90 bus_remove_driver+0x6d/0xf0 pci_unregister_driver+0x2e/0xa0 pdsc_cleanup_module+0x10/0x780 [pds_core] __x64_sys_delete_module+0x142/0x2b0 ? syscall_trace_enter.isra.18+0x126/0x1a0 do_syscall_64+0x3b/0x90 Entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fbd9d03a14b [...] Solucione este problema evitando que devcmd se reinicie si el FW no se est\u00e1 ejecutando."
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npds_core: Fix pdsc_check_pci_health function to use work thread\n\nWhen the driver notices fw_status == 0xff it tries to perform a PCI\nreset on itself via pci_reset_function() in the context of the driver\u0027s\nhealth thread. However, pdsc_reset_prepare calls\npdsc_stop_health_thread(), which attempts to stop/flush the health\nthread. This results in a deadlock because the stop/flush will never\ncomplete since the driver called pci_reset_function() from the health\nthread context. Fix by changing the pdsc_check_pci_health_function()\nto queue a newly introduced pdsc_pci_reset_thread() on the pdsc\u0027s\nwork queue.\n\nUnloading the driver in the fw_down/dead state uncovered another issue,\nwhich can be seen in the following trace:\n\nWARNING: CPU: 51 PID: 6914 at kernel/workqueue.c:1450 __queue_work+0x358/0x440\n[...]\nRIP: 0010:__queue_work+0x358/0x440\n[...]\nCall Trace:\n \u003cTASK\u003e\n ? __warn+0x85/0x140\n ? __queue_work+0x358/0x440\n ? report_bug+0xfc/0x1e0\n ? handle_bug+0x3f/0x70\n ? exc_invalid_op+0x17/0x70\n ? asm_exc_invalid_op+0x1a/0x20\n ? __queue_work+0x358/0x440\n queue_work_on+0x28/0x30\n pdsc_devcmd_locked+0x96/0xe0 [pds_core]\n pdsc_devcmd_reset+0x71/0xb0 [pds_core]\n pdsc_teardown+0x51/0xe0 [pds_core]\n pdsc_remove+0x106/0x200 [pds_core]\n pci_device_remove+0x37/0xc0\n device_release_driver_internal+0xae/0x140\n driver_detach+0x48/0x90\n bus_remove_driver+0x6d/0xf0\n pci_unregister_driver+0x2e/0xa0\n pdsc_cleanup_module+0x10/0x780 [pds_core]\n __x64_sys_delete_module+0x142/0x2b0\n ? syscall_trace_enter.isra.18+0x126/0x1a0\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\nRIP: 0033:0x7fbd9d03a14b\n[...]\n\nFix this by preventing the devcmd reset if the FW is not running."
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: pds_core: corrige la funci\u00f3n pdsc_check_pci_health para usar el subproceso de trabajo. Cuando el controlador nota fw_status == 0xff, intenta realizar un restablecimiento de PCI sobre s\u00ed mismo a trav\u00e9s de pci_reset_function() en el contexto del subproceso de estado del controlador. . Sin embargo, pdsc_reset_prepare llama a pdsc_stop_health_thread(), que intenta detener/vaciar el hilo de salud. Esto da como resultado un punto muerto porque la parada/vaciado nunca se completar\u00e1 ya que el controlador llam\u00f3 a pci_reset_function() desde el contexto del hilo de salud. Para solucionarlo, cambie pdsc_check_pci_health_function() para poner en cola un pdsc_pci_reset_thread() reci\u00e9n introducido en la cola de trabajo del pdsc. La descarga del controlador en el estado fw_down/dead descubri\u00f3 otro problema, que se puede ver en el siguiente seguimiento: ADVERTENCIA: CPU: 51 PID: 6914 en kernel/workqueue.c:1450 __queue_work+0x358/0x440 [...] RIP: 0010:__queue_work+0x358/0x440 [...] Seguimiento de llamadas: ? __warn+0x85/0x140 ? __queue_work+0x358/0x440? report_bug+0xfc/0x1e0? handle_bug+0x3f/0x70? exc_invalid_op+0x17/0x70? asm_exc_invalid_op+0x1a/0x20? __queue_work+0x358/0x440 queue_work_on+0x28/0x30 pdsc_devcmd_locked+0x96/0xe0 [pds_core] pdsc_devcmd_reset+0x71/0xb0 [pds_core] pdsc_teardown+0x51/0xe0 [pds_core] pdsc_remove+0x106/0x200 [pds_core] pci_device_remove+0x37/0xc0 device_release_driver_internal+0xae /0x140 driver_detach+0x48/0x90 bus_remove_driver+0x6d/0xf0 pci_unregister_driver+0x2e/0xa0 pdsc_cleanup_module+0x10/0x780 [pds_core] __x64_sys_delete_module+0x142/0x2b0 ? syscall_trace_enter.isra.18+0x126/0x1a0 do_syscall_64+0x3b/0x90 Entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fbd9d03a14b [...] Solucione este problema evitando que devcmd se reinicie si el FW no se est\u00e1 ejecutando."
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}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.