CVE-2024-50147 (GCVE-0-2024-50147)

Vulnerability from cvelistv5 – Published: 2024-11-07 09:31 – Updated: 2026-05-11 20:46
VLAI
Title
net/mlx5: Fix command bitmask initialization
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix command bitmask initialization Command bitmask have a dedicated bit for MANAGE_PAGES command, this bit isn't Initialize during command bitmask Initialization, only during MANAGE_PAGES. In addition, mlx5_cmd_trigger_completions() is trying to trigger completion for MANAGE_PAGES command as well. Hence, in case health error occurred before any MANAGE_PAGES command have been invoke (for example, during mlx5_enable_hca()), mlx5_cmd_trigger_completions() will try to trigger completion for MANAGE_PAGES command, which will result in null-ptr-deref error.[1] Fix it by Initialize command bitmask correctly. While at it, re-write the code for better understanding. [1] BUG: KASAN: null-ptr-deref in mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core] Write of size 4 at addr 0000000000000214 by task kworker/u96:2/12078 CPU: 10 PID: 12078 Comm: kworker/u96:2 Not tainted 6.9.0-rc2_for_upstream_debug_2024_04_07_19_01 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 Workqueue: mlx5_health0000:08:00.0 mlx5_fw_fatal_reporter_err_work [mlx5_core] Call Trace: <TASK> dump_stack_lvl+0x7e/0xc0 kasan_report+0xb9/0xf0 kasan_check_range+0xec/0x190 mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core] mlx5_cmd_flush+0x94/0x240 [mlx5_core] enter_error_state+0x6c/0xd0 [mlx5_core] mlx5_fw_fatal_reporter_err_work+0xf3/0x480 [mlx5_core] process_one_work+0x787/0x1490 ? lockdep_hardirqs_on_prepare+0x400/0x400 ? pwq_dec_nr_in_flight+0xda0/0xda0 ? assign_work+0x168/0x240 worker_thread+0x586/0xd30 ? rescuer_thread+0xae0/0xae0 kthread+0x2df/0x3b0 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x2d/0x70 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork_asm+0x11/0x20 </TASK>
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 20:20 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9b98d395b85dd042fe83fb696b1ac02e6c93a520 , < d1606090bb294cecb7de3c4ed177f5aa0abd4c4e (git)
Affected: 9b98d395b85dd042fe83fb696b1ac02e6c93a520 , < d88564c79d1cedaf2655f12261eca0d2796bde4e (git)
Affected: 9b98d395b85dd042fe83fb696b1ac02e6c93a520 , < 2feac1e562be0efc621a6722644a90f355d53473 (git)
Affected: 9b98d395b85dd042fe83fb696b1ac02e6c93a520 , < d62b14045c6511a7b2d4948d1a83a4e592deeb05 (git)
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Linux Linux Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.1.115 , ≤ 6.1.* (semver)
Unaffected: 6.6.59 , ≤ 6.6.* (semver)
Unaffected: 6.11.6 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix command bitmask initialization\n\nCommand bitmask have a dedicated bit for MANAGE_PAGES command, this bit\nisn\u0027t Initialize during command bitmask Initialization, only during\nMANAGE_PAGES.\n\nIn addition, mlx5_cmd_trigger_completions() is trying to trigger\ncompletion for MANAGE_PAGES command as well.\n\nHence, in case health error occurred before any MANAGE_PAGES command\nhave been invoke (for example, during mlx5_enable_hca()),\nmlx5_cmd_trigger_completions() will try to trigger completion for\nMANAGE_PAGES command, which will result in null-ptr-deref error.[1]\n\nFix it by Initialize command bitmask correctly.\n\nWhile at it, re-write the code for better understanding.\n\n[1]\nBUG: KASAN: null-ptr-deref in mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core]\nWrite of size 4 at addr 0000000000000214 by task kworker/u96:2/12078\nCPU: 10 PID: 12078 Comm: kworker/u96:2 Not tainted 6.9.0-rc2_for_upstream_debug_2024_04_07_19_01 #1\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nWorkqueue: mlx5_health0000:08:00.0 mlx5_fw_fatal_reporter_err_work [mlx5_core]\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x7e/0xc0\n kasan_report+0xb9/0xf0\n kasan_check_range+0xec/0x190\n mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core]\n mlx5_cmd_flush+0x94/0x240 [mlx5_core]\n enter_error_state+0x6c/0xd0 [mlx5_core]\n mlx5_fw_fatal_reporter_err_work+0xf3/0x480 [mlx5_core]\n process_one_work+0x787/0x1490\n ? lockdep_hardirqs_on_prepare+0x400/0x400\n ? pwq_dec_nr_in_flight+0xda0/0xda0\n ? assign_work+0x168/0x240\n worker_thread+0x586/0xd30\n ? rescuer_thread+0xae0/0xae0\n kthread+0x2df/0x3b0\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork+0x2d/0x70\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork_asm+0x11/0x20\n \u003c/TASK\u003e"
        },
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          "lang": "es",
          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/mlx5: Arreglar la inicializaci\u00f3n de la m\u00e1scara de bits del comando La m\u00e1scara de bits del comando tiene un bit dedicado para el comando MANAGE_PAGES, este bit no se inicializa durante la inicializaci\u00f3n de la m\u00e1scara de bits del comando, solo durante MANAGE_PAGES. Adem\u00e1s, mlx5_cmd_trigger_completions() tambi\u00e9n intenta activar la finalizaci\u00f3n del comando MANAGE_PAGES. Por lo tanto, en caso de que se produzca un error de estado antes de que se haya invocado cualquier comando MANAGE_PAGES (por ejemplo, durante mlx5_enable_hca()), mlx5_cmd_trigger_completions() intentar\u00e1 activar la finalizaci\u00f3n del comando MANAGE_PAGES, lo que dar\u00e1 como resultado un error null-ptr-deref.[1] Arr\u00e9glalo inicializando la m\u00e1scara de bits del comando correctamente. Mientras lo haces, reescribe el c\u00f3digo para una mejor comprensi\u00f3n. [1] ERROR: KASAN: null-ptr-deref en mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core] Escritura de tama\u00f1o 4 en la direcci\u00f3n 0000000000000214 por la tarea kworker/u96:2/12078 CPU: 10 PID: 12078 Comm: kworker/u96:2 No contaminado 6.9.0-rc2_for_upstream_debug_2024_04_07_19_01 #1 Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 Cola de trabajo: mlx5_health0000:08:00.0 mlx5_fw_fatal_reporter_err_work [mlx5_core] Seguimiento de llamadas:  dump_stack_lvl+0x7e/0xc0 kasan_report+0xb9/0xf0 kasan_check_range+0xec/0x190 mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core] mlx5_cmd_flush+0x94/0x240 [mlx5_core] enter_error_state+0x6c/0xd0 [mlx5_core] mlx5_fw_fatal_reporter_err_work+0xf3/0x480 [mlx5_core] process_one_work+0x787/0x1490 ? lockdep_hardirqs_on_prepare+0x400/0x400 ? pwq_dec_nr_in_flight+0xda0/0xda0 ? asignar_trabajo+0x168/0x240 subproceso_trabajador+0x586/0xd30 ? subproceso_rescatador+0xae0/0xae0 subproceso_k+0x2df/0x3b0 ? subproceso_k_completo_y_salir+0x20/0x20 ret_de_la_bifurcaci\u00f3n+0x2d/0x70 ? subproceso_k_completo_y_salir+0x20/0x20 ret_de_la_bifurcaci\u00f3n_asm+0x11/0x20 "
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      "id": "CVE-2024-50147",
      "lastModified": "2024-11-18T21:19:21.917",
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                    "status": "unaffected",
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            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix command bitmask initialization\n\nCommand bitmask have a dedicated bit for MANAGE_PAGES command, this bit\nisn\u0027t Initialize during command bitmask Initialization, only during\nMANAGE_PAGES.\n\nIn addition, mlx5_cmd_trigger_completions() is trying to trigger\ncompletion for MANAGE_PAGES command as well.\n\nHence, in case health error occurred before any MANAGE_PAGES command\nhave been invoke (for example, during mlx5_enable_hca()),\nmlx5_cmd_trigger_completions() will try to trigger completion for\nMANAGE_PAGES command, which will result in null-ptr-deref error.[1]\n\nFix it by Initialize command bitmask correctly.\n\nWhile at it, re-write the code for better understanding.\n\n[1]\nBUG: KASAN: null-ptr-deref in mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core]\nWrite of size 4 at addr 0000000000000214 by task kworker/u96:2/12078\nCPU: 10 PID: 12078 Comm: kworker/u96:2 Not tainted 6.9.0-rc2_for_upstream_debug_2024_04_07_19_01 #1\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nWorkqueue: mlx5_health0000:08:00.0 mlx5_fw_fatal_reporter_err_work [mlx5_core]\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x7e/0xc0\n kasan_report+0xb9/0xf0\n kasan_check_range+0xec/0x190\n mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core]\n mlx5_cmd_flush+0x94/0x240 [mlx5_core]\n enter_error_state+0x6c/0xd0 [mlx5_core]\n mlx5_fw_fatal_reporter_err_work+0xf3/0x480 [mlx5_core]\n process_one_work+0x787/0x1490\n ? lockdep_hardirqs_on_prepare+0x400/0x400\n ? pwq_dec_nr_in_flight+0xda0/0xda0\n ? assign_work+0x168/0x240\n worker_thread+0x586/0xd30\n ? rescuer_thread+0xae0/0xae0\n kthread+0x2df/0x3b0\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork+0x2d/0x70\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork_asm+0x11/0x20\n \u003c/TASK\u003e"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/mlx5: Arreglar la inicializaci\u00f3n de la m\u00e1scara de bits del comando La m\u00e1scara de bits del comando tiene un bit dedicado para el comando MANAGE_PAGES, este bit no se inicializa durante la inicializaci\u00f3n de la m\u00e1scara de bits del comando, solo durante MANAGE_PAGES. Adem\u00e1s, mlx5_cmd_trigger_completions() tambi\u00e9n intenta activar la finalizaci\u00f3n del comando MANAGE_PAGES. Por lo tanto, en caso de que se produzca un error de estado antes de que se haya invocado cualquier comando MANAGE_PAGES (por ejemplo, durante mlx5_enable_hca()), mlx5_cmd_trigger_completions() intentar\u00e1 activar la finalizaci\u00f3n del comando MANAGE_PAGES, lo que dar\u00e1 como resultado un error null-ptr-deref.[1] Arr\u00e9glalo inicializando la m\u00e1scara de bits del comando correctamente. Mientras lo haces, reescribe el c\u00f3digo para una mejor comprensi\u00f3n. [1] ERROR: KASAN: null-ptr-deref en mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core] Escritura de tama\u00f1o 4 en la direcci\u00f3n 0000000000000214 por la tarea kworker/u96:2/12078 CPU: 10 PID: 12078 Comm: kworker/u96:2 No contaminado 6.9.0-rc2_for_upstream_debug_2024_04_07_19_01 #1 Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 Cola de trabajo: mlx5_health0000:08:00.0 mlx5_fw_fatal_reporter_err_work [mlx5_core] Seguimiento de llamadas:  dump_stack_lvl+0x7e/0xc0 kasan_report+0xb9/0xf0 kasan_check_range+0xec/0x190 mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core] mlx5_cmd_flush+0x94/0x240 [mlx5_core] enter_error_state+0x6c/0xd0 [mlx5_core] mlx5_fw_fatal_reporter_err_work+0xf3/0x480 [mlx5_core] process_one_work+0x787/0x1490 ? lockdep_hardirqs_on_prepare+0x400/0x400 ? pwq_dec_nr_in_flight+0xda0/0xda0 ? asignar_trabajo+0x168/0x240 subproceso_trabajador+0x586/0xd30 ? subproceso_rescatador+0xae0/0xae0 subproceso_k+0x2df/0x3b0 ? subproceso_k_completo_y_salir+0x20/0x20 ret_de_la_bifurcaci\u00f3n+0x2d/0x70 ? subproceso_k_completo_y_salir+0x20/0x20 ret_de_la_bifurcaci\u00f3n_asm+0x11/0x20 "
          }
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            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix command bitmask initialization\n\nCommand bitmask have a dedicated bit for MANAGE_PAGES command, this bit\nisn\u0027t Initialize during command bitmask Initialization, only during\nMANAGE_PAGES.\n\nIn addition, mlx5_cmd_trigger_completions() is trying to trigger\ncompletion for MANAGE_PAGES command as well.\n\nHence, in case health error occurred before any MANAGE_PAGES command\nhave been invoke (for example, during mlx5_enable_hca()),\nmlx5_cmd_trigger_completions() will try to trigger completion for\nMANAGE_PAGES command, which will result in null-ptr-deref error.[1]\n\nFix it by Initialize command bitmask correctly.\n\nWhile at it, re-write the code for better understanding.\n\n[1]\nBUG: KASAN: null-ptr-deref in mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core]\nWrite of size 4 at addr 0000000000000214 by task kworker/u96:2/12078\nCPU: 10 PID: 12078 Comm: kworker/u96:2 Not tainted 6.9.0-rc2_for_upstream_debug_2024_04_07_19_01 #1\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nWorkqueue: mlx5_health0000:08:00.0 mlx5_fw_fatal_reporter_err_work [mlx5_core]\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x7e/0xc0\n kasan_report+0xb9/0xf0\n kasan_check_range+0xec/0x190\n mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core]\n mlx5_cmd_flush+0x94/0x240 [mlx5_core]\n enter_error_state+0x6c/0xd0 [mlx5_core]\n mlx5_fw_fatal_reporter_err_work+0xf3/0x480 [mlx5_core]\n process_one_work+0x787/0x1490\n ? lockdep_hardirqs_on_prepare+0x400/0x400\n ? pwq_dec_nr_in_flight+0xda0/0xda0\n ? assign_work+0x168/0x240\n worker_thread+0x586/0xd30\n ? rescuer_thread+0xae0/0xae0\n kthread+0x2df/0x3b0\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork+0x2d/0x70\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork_asm+0x11/0x20\n \u003c/TASK\u003e"
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-05-04T09:47:15.279Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/d1606090bb294cecb7de3c4ed177f5aa0abd4c4e"
            },
            {
              "url": "https://git.kernel.org/stable/c/d88564c79d1cedaf2655f12261eca0d2796bde4e"
            },
            {
              "url": "https://git.kernel.org/stable/c/2feac1e562be0efc621a6722644a90f355d53473"
            },
            {
              "url": "https://git.kernel.org/stable/c/d62b14045c6511a7b2d4948d1a83a4e592deeb05"
            }
          ],
          "title": "net/mlx5: Fix command bitmask initialization",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-50147",
        "datePublished": "2024-11-07T09:31:24.151Z",
        "dateReserved": "2024-10-21T19:36:19.958Z",
        "dateUpdated": "2025-11-03T22:26:05.797Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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