CVE-2022-49082

Estado: AnalizadaAlta (7.8)—

In the Linux kernel, the following vulnerability has been resolved:

scsi: mpt3sas: Fix use after free in _scsih_expander_node_remove()

The function mpt3sas_transport_port_remove() called in _scsih_expander_node_remove() frees the port field of the sas_expander structure, leading to the following use-after-free splat from KASAN when the ioc_info() call following that function is executed (e.g. when doing rmmod of the driver module):

Fix this by introducing the local variable port_id to store the port ID value before executing mpt3sas_transport_port_remove(). This local variable is then used in the call to ioc_info() instead of dereferencing the freed port structure.

Detalles técnicos trazas, registros y código del informe original

[ 3479.371167] ==================================================================
[ 3479.378496] BUG: KASAN: use-after-free in _scsih_expander_node_remove+0x710/0x750 [mpt3sas]
[ 3479.386936] Read of size 1 at addr ffff8881c037691c by task rmmod/1531
[ 3479.393524]
[ 3479.395035] CPU: 18 PID: 1531 Comm: rmmod Not tainted 5.17.0-rc8+ #1436
[ 3479.401712] Hardware name: Supermicro Super Server/H12SSL-NT, BIOS 2.1 06/02/2021
[ 3479.409263] Call Trace:
[ 3479.411743]  <TASK>
[ 3479.413875]  dump_stack_lvl+0x45/0x59
[ 3479.417582]  print_address_description.constprop.0+0x1f/0x120
[ 3479.423389]  ? _scsih_expander_node_remove+0x710/0x750 [mpt3sas]
[ 3479.429469]  kasan_report.cold+0x83/0xdf
[ 3479.433438]  ? _scsih_expander_node_remove+0x710/0x750 [mpt3sas]
[ 3479.439514]  _scsih_expander_node_remove+0x710/0x750 [mpt3sas]
[ 3479.445411]  ? _raw_spin_unlock_irqrestore+0x2d/0x40
[ 3479.452032]  scsih_remove+0x525/0xc90 [mpt3sas]
[ 3479.458212]  ? mpt3sas_expander_remove+0x1d0/0x1d0 [mpt3sas]
[ 3479.465529]  ? down_write+0xde/0x150
[ 3479.470746]  ? up_write+0x14d/0x460
[ 3479.475840]  ? kernfs_find_ns+0x137/0x310
[ 3479.481438]  pci_device_remove+0x65/0x110
[ 3479.487013]  __device_release_driver+0x316/0x680
[ 3479.493180]  driver_detach+0x1ec/0x2d0
[ 3479.498499]  bus_remove_driver+0xe7/0x2d0
[ 3479.504081]  pci_unregister_driver+0x26/0x250
[ 3479.510033]  _mpt3sas_exit+0x2b/0x6cf [mpt3sas]
[ 3479.516144]  __x64_sys_delete_module+0x2fd/0x510
[ 3479.522315]  ? free_module+0xaa0/0xaa0
[ 3479.527593]  ? __cond_resched+0x1c/0x90
[ 3479.532951]  ? lockdep_hardirqs_on_prepare+0x273/0x3e0
[ 3479.539607]  ? syscall_enter_from_user_mode+0x21/0x70
[ 3479.546161]  ? trace_hardirqs_on+0x1c/0x110
[ 3479.551828]  do_syscall_64+0x35/0x80
[ 3479.556884]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 3479.563402] RIP: 0033:0x7f1fc482483b
...
[ 3479.943087] ==================================================================

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.25%
Percentil entre todas las CVEs puntuadas: 15
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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation75 %
Impacto principalT1059 Command and Scripting Interpreterexecution60 %

Vulnerabilidad de use-after-free (CWE-416) en kernel Linux que requiere acceso local (AV:L) con privilegios de usuario (PR:L) para desencadenar la lectura de memoria liberada. El impacto potencial incluye ejecución de código arbitrario mediante corrupción de memoria.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution Prevention Threat Intelligence Program Restrict Web-Based Content Privileged Account Management Limit Software Installation Behavior Prevention on Endpoint

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-416

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2022-49082",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-49082",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-02-27T18:17:34.716925Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "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": "7d310f241001e090cf1ec0f3ae836b38d8c6ebec",
              "lessThan": "25c1353dca74ad7cf3fd7ce258fe7c957a147d5e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7d310f241001e090cf1ec0f3ae836b38d8c6ebec",
              "lessThan": "17d66b1c92bcb41e72271ec60069d3684aaa1c9c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7d310f241001e090cf1ec0f3ae836b38d8c6ebec",
              "lessThan": "1bb8a7fc64d63ec818e367e1b37676ea2ef2d20c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7d310f241001e090cf1ec0f3ae836b38d8c6ebec",
              "lessThan": "87d663d40801dffc99a5ad3b0188ad3e2b4d1557",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/scsi/mpt3sas/mpt3sas_scsih.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.11"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.11",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.34",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "5.16.20",
              "versionType": "semver",
              "lessThanOrEqual": "5.16.*"
            },
            {
              "status": "unaffected",
              "version": "5.17.3",
              "versionType": "semver",
              "lessThanOrEqual": "5.17.*"
            },
            {
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/scsi/mpt3sas/mpt3sas_scsih.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-02-26T07:00:45.540",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/17d66b1c92bcb41e72271ec60069d3684aaa1c9c",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1bb8a7fc64d63ec818e367e1b37676ea2ef2d20c",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/25c1353dca74ad7cf3fd7ce258fe7c957a147d5e",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/87d663d40801dffc99a5ad3b0188ad3e2b4d1557",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: mpt3sas: Fix use after free in _scsih_expander_node_remove()\n\nThe function mpt3sas_transport_port_remove() called in\n_scsih_expander_node_remove() frees the port field of the sas_expander\nstructure, leading to the following use-after-free splat from KASAN when\nthe ioc_info() call following that function is executed (e.g. when doing\nrmmod of the driver module):\n\n[ 3479.371167] ==================================================================\n[ 3479.378496] BUG: KASAN: use-after-free in _scsih_expander_node_remove+0x710/0x750 [mpt3sas]\n[ 3479.386936] Read of size 1 at addr ffff8881c037691c by task rmmod/1531\n[ 3479.393524]\n[ 3479.395035] CPU: 18 PID: 1531 Comm: rmmod Not tainted 5.17.0-rc8+ #1436\n[ 3479.401712] Hardware name: Supermicro Super Server/H12SSL-NT, BIOS 2.1 06/02/2021\n[ 3479.409263] Call Trace:\n[ 3479.411743]  <TASK>\n[ 3479.413875]  dump_stack_lvl+0x45/0x59\n[ 3479.417582]  print_address_description.constprop.0+0x1f/0x120\n[ 3479.423389]  ? _scsih_expander_node_remove+0x710/0x750 [mpt3sas]\n[ 3479.429469]  kasan_report.cold+0x83/0xdf\n[ 3479.433438]  ? _scsih_expander_node_remove+0x710/0x750 [mpt3sas]\n[ 3479.439514]  _scsih_expander_node_remove+0x710/0x750 [mpt3sas]\n[ 3479.445411]  ? _raw_spin_unlock_irqrestore+0x2d/0x40\n[ 3479.452032]  scsih_remove+0x525/0xc90 [mpt3sas]\n[ 3479.458212]  ? mpt3sas_expander_remove+0x1d0/0x1d0 [mpt3sas]\n[ 3479.465529]  ? down_write+0xde/0x150\n[ 3479.470746]  ? up_write+0x14d/0x460\n[ 3479.475840]  ? kernfs_find_ns+0x137/0x310\n[ 3479.481438]  pci_device_remove+0x65/0x110\n[ 3479.487013]  __device_release_driver+0x316/0x680\n[ 3479.493180]  driver_detach+0x1ec/0x2d0\n[ 3479.498499]  bus_remove_driver+0xe7/0x2d0\n[ 3479.504081]  pci_unregister_driver+0x26/0x250\n[ 3479.510033]  _mpt3sas_exit+0x2b/0x6cf [mpt3sas]\n[ 3479.516144]  __x64_sys_delete_module+0x2fd/0x510\n[ 3479.522315]  ? free_module+0xaa0/0xaa0\n[ 3479.527593]  ? __cond_resched+0x1c/0x90\n[ 3479.532951]  ? lockdep_hardirqs_on_prepare+0x273/0x3e0\n[ 3479.539607]  ? syscall_enter_from_user_mode+0x21/0x70\n[ 3479.546161]  ? trace_hardirqs_on+0x1c/0x110\n[ 3479.551828]  do_syscall_64+0x35/0x80\n[ 3479.556884]  entry_SYSCALL_64_after_hwframe+0x44/0xae\n[ 3479.563402] RIP: 0033:0x7f1fc482483b\n...\n[ 3479.943087] ==================================================================\n\nFix this by introducing the local variable port_id to store the port ID\nvalue before executing mpt3sas_transport_port_remove(). This local variable\nis then used in the call to ioc_info() instead of dereferencing the freed\nport structure."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: mpt3sas: Se corrige el use-after-free en _scsih_expander_node_remove() La función mpt3sas_transport_port_remove() llamada en _scsih_expander_node_remove() libera el campo de puerto de la estructura sas_expander, lo que lleva al siguiente splat de use-after-free de KASAN cuando se ejecuta la llamada ioc_info() después de esa función (por ejemplo, al realizar rmmod del módulo del controlador): [ 3479.371167] ===================================================================== [ 3479.378496] ERROR: KASAN: use-after-free en _scsih_expander_node_remove+0x710/0x750 [mpt3sas] [ 3479.386936] Lectura de tamaño 1 en la dirección ffff8881c037691c por la tarea rmmod/1531 [ 3479.393524] [ 3479.395035] CPU: 18 PID: 1531 Comm: rmmod No contaminado 5.17.0-rc8+ #1436 [ 3479.401712] Nombre del hardware: Supermicro Super Server/H12SSL-NT, BIOS 2.1 06/02/2021 [ 3479.409263] Call Trace: [ 3479.411743]  [ 3479.413875] dump_stack_lvl+0x45/0x59 [ 3479.417582] print_address_description.constprop.0+0x1f/0x120 [ 3479.423389] ? _scsih_expander_node_remove+0x710/0x750 [mpt3sas] [ 3479.429469] kasan_report.cold+0x83/0xdf [ 3479.433438] ? _scsih_expander_node_remove+0x710/0x750 [mpt3sas] [ 3479.439514] _scsih_expander_node_remove+0x710/0x750 [mpt3sas] [ 3479.445411] ? _raw_spin_unlock_irqrestore+0x2d/0x40 [ 3479.452032] scsih_remove+0x525/0xc90 [mpt3sas] [ 3479.458212] ? mpt3sas_expander_remove+0x1d0/0x1d0 [mpt3sas] [ 3479.465529] ? down_write+0xde/0x150 [ 3479.470746] ? up_write+0x14d/0x460 [ 3479.475840] ? kernfs_find_ns+0x137/0x310 [ 3479.481438] pci_device_remove+0x65/0x110 [ 3479.487013] __device_release_driver+0x316/0x680 [ 3479.493180] driver_detach+0x1ec/0x2d0 [ 3479.498499] bus_remove_driver+0xe7/0x2d0 [ 3479.504081] pci_unregister_driver+0x26/0x250 [ 3479.510033] _mpt3sas_exit+0x2b/0x6cf [mpt3sas] [ 3479.516144] __x64_sys_delete_module+0x2fd/0x510 [ 3479.522315] ? free_module+0xaa0/0xaa0 [ 3479.527593] ? __cond_resched+0x1c/0x90 [ 3479.532951] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 3479.539607] ? syscall_enter_from_user_mode+0x21/0x70 [ 3479.546161] ? trace_hardirqs_on+0x1c/0x110 [ 3479.551828] do_syscall_64+0x35/0x80 [ 3479.556884] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 3479.563402] RIP: 0033:0x7f1fc482483b ... [ 3479.943087] ======================================================================== Solucione esto introduciendo la variable local port_id para almacenar el valor del ID del puerto antes de ejecutar mpt3sas_transport_port_remove(). Luego, esta variable local se utiliza en la llamada a ioc_info() en lugar de desreferenciar la estructura del puerto liberado."
    }
  ],
  "lastModified": "2026-06-17T05:17:01.797",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D25878D3-7761-4E9F-8919-E92CD53896E0",
              "versionEndExcluding": "5.15.34",
              "versionStartIncluding": "5.11"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "ABBBA66E-0244-4621-966B-9790AF1EEB00",
              "versionEndExcluding": "5.16.20",
              "versionStartIncluding": "5.16"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AE420AC7-1E59-4398-B84F-71F4B4337762",
              "versionEndExcluding": "5.17.3",
              "versionStartIncluding": "5.17"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6AD94161-84BB-42E6-9882-4FC0C42E9FC1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}