CVE-2024-50147
Estado: ModificadaMedia (5.5)—
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]
Leer descripción completaMostrar menos
Fix it by Initialize command bitmask correctly.
While at it, re-write the code for better understanding.
Detalles técnicos trazas, registros y código del informe original
[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>
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.23%
- Percentil entre todas las CVEs puntuadas: 13
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-476
- CWE-476
Referencias
- https://git.kernel.org/stable/c/2feac1e562be0efc621a6722644a90f355d53473
- https://git.kernel.org/stable/c/d1606090bb294cecb7de3c4ed177f5aa0abd4c4e
- https://git.kernel.org/stable/c/d62b14045c6511a7b2d4948d1a83a4e592deeb05
- https://git.kernel.org/stable/c/d88564c79d1cedaf2655f12261eca0d2796bde4e
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
JSON original (NVD)
Mostrar
{
"id": "CVE-2024-50147",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-50147",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2025-10-01T20:20:50.679297Z"
}
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.5,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1.8
},
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.5,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "9b98d395b85dd042fe83fb696b1ac02e6c93a520",
"lessThan": "d1606090bb294cecb7de3c4ed177f5aa0abd4c4e",
"versionType": "git"
},
{
"status": "affected",
"version": "9b98d395b85dd042fe83fb696b1ac02e6c93a520",
"lessThan": "d88564c79d1cedaf2655f12261eca0d2796bde4e",
"versionType": "git"
},
{
"status": "affected",
"version": "9b98d395b85dd042fe83fb696b1ac02e6c93a520",
"lessThan": "2feac1e562be0efc621a6722644a90f355d53473",
"versionType": "git"
},
{
"status": "affected",
"version": "9b98d395b85dd042fe83fb696b1ac02e6c93a520",
"lessThan": "d62b14045c6511a7b2d4948d1a83a4e592deeb05",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/mellanox/mlx5/core/cmd.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.1"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.115",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.59",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.11.6",
"versionType": "semver",
"lessThanOrEqual": "6.11.*"
},
{
"status": "unaffected",
"version": "6.12",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/mellanox/mlx5/core/cmd.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2024-11-07T10:15:06.507",
"references": [
{
"url": "https://git.kernel.org/stable/c/2feac1e562be0efc621a6722644a90f355d53473",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/d1606090bb294cecb7de3c4ed177f5aa0abd4c4e",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/d62b14045c6511a7b2d4948d1a83a4e592deeb05",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/d88564c79d1cedaf2655f12261eca0d2796bde4e",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-476"
}
]
},
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"description": [
{
"lang": "en",
"value": "CWE-476"
}
]
}
],
"descriptions": [
{
"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't 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 <TASK>\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 </TASK>"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/mlx5: Arreglar la inicialización de la máscara de bits del comando La máscara de bits del comando tiene un bit dedicado para el comando MANAGE_PAGES, este bit no se inicializa durante la inicialización de la máscara de bits del comando, solo durante MANAGE_PAGES. Además, mlx5_cmd_trigger_completions() también intenta activar la finalización 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() intentará activar la finalización del comando MANAGE_PAGES, lo que dará como resultado un error null-ptr-deref.[1] Arréglalo inicializando la máscara de bits del comando correctamente. Mientras lo haces, reescribe el código para una mejor comprensión. [1] ERROR: KASAN: null-ptr-deref en mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core] Escritura de tamaño 4 en la dirección 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_bifurcación+0x2d/0x70 ? subproceso_k_completo_y_salir+0x20/0x20 ret_de_la_bifurcación_asm+0x11/0x20 "
}
],
"lastModified": "2026-06-17T08:03:42.660",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9E7318A8-E93E-495C-808C-47CF1377AB19",
"versionEndExcluding": "6.1.115",
"versionStartIncluding": "6.1"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5D15CA59-D15C-4ACD-8B03-A072DEAD2081",
"versionEndExcluding": "6.6.59",
"versionStartIncluding": "6.2"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E4486B12-007B-4794-9857-F07145637AA1",
"versionEndExcluding": "6.11.6",
"versionStartIncluding": "6.7"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}