CVE-2022-49082 (GCVE-0-2022-49082)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:54 – Updated: 2026-05-11 18:52
VLAI
Title
scsi: mpt3sas: Fix use after free in _scsih_expander_node_remove()
Summary
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): [ 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] ================================================================== 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.
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: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-27 18:17 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7d310f241001e090cf1ec0f3ae836b38d8c6ebec , < 25c1353dca74ad7cf3fd7ce258fe7c957a147d5e (git)
Affected: 7d310f241001e090cf1ec0f3ae836b38d8c6ebec , < 17d66b1c92bcb41e72271ec60069d3684aaa1c9c (git)
Affected: 7d310f241001e090cf1ec0f3ae836b38d8c6ebec , < 1bb8a7fc64d63ec818e367e1b37676ea2ef2d20c (git)
Affected: 7d310f241001e090cf1ec0f3ae836b38d8c6ebec , < 87d663d40801dffc99a5ad3b0188ad3e2b4d1557 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.11
Unaffected: 0 , < 5.11 (semver)
Unaffected: 5.15.34 , ≤ 5.15.* (semver)
Unaffected: 5.16.20 , ≤ 5.16.* (semver)
Unaffected: 5.17.3 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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              "confidentialityImpact": "HIGH",
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              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
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          "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]  \u003cTASK\u003e\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."
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          "url": "https://git.kernel.org/stable/c/1bb8a7fc64d63ec818e367e1b37676ea2ef2d20c"
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        {
          "url": "https://git.kernel.org/stable/c/87d663d40801dffc99a5ad3b0188ad3e2b4d1557"
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      "title": "scsi: mpt3sas: Fix use after free in _scsih_expander_node_remove()",
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    "state": "PUBLISHED"
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        "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]  \u003cTASK\u003e\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 funci\u00f3n 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() despu\u00e9s de esa funci\u00f3n (por ejemplo, al realizar rmmod del m\u00f3dulo del controlador): [ 3479.371167] ===================================================================== [ 3479.378496] ERROR: KASAN: use-after-free en _scsih_expander_node_remove+0x710/0x750 [mpt3sas] [ 3479.386936] Lectura de tama\u00f1o 1 en la direcci\u00f3n 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."
          }
        ],
        "id": "CVE-2022-49082",
        "lastModified": "2026-06-17T05:17:01.797",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2022-49082",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-27T18:17:34.716925Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2025-02-26T07:00:45.540",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/17d66b1c92bcb41e72271ec60069d3684aaa1c9c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/1bb8a7fc64d63ec818e367e1b37676ea2ef2d20c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/25c1353dca74ad7cf3fd7ce258fe7c957a147d5e"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/87d663d40801dffc99a5ad3b0188ad3e2b4d1557"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T20:57:16+00:00",
      "cve": "CVE-2022-49082",
      "id": "CVE-2022-49082",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: scsi: mpt3sas: Fix use after free in _scsih_expander_node_remove()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49082.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T02:06:01Z",
      "cve": "CVE-2022-49082",
      "id": "CVE-2022-49082",
      "initial_release_date": "2025-02-27T03:12:34Z",
      "product_status:known_affected": "360",
      "product_status:known_not_affected": "343",
      "product_status:recommended": "293",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49082",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49082.json",
      "version": "45"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "LOCAL",
                  "availabilityImpact": "HIGH",
                  "baseScore": 7.8,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "LOW",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2022-49082",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-02-27T18:17:34.716925Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-416",
                    "description": "CWE-416 Use After Free",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-02-27T18:17:36.405Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/scsi/mpt3sas/mpt3sas_scsih.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "25c1353dca74ad7cf3fd7ce258fe7c957a147d5e",
                  "status": "affected",
                  "version": "7d310f241001e090cf1ec0f3ae836b38d8c6ebec",
                  "versionType": "git"
                },
                {
                  "lessThan": "17d66b1c92bcb41e72271ec60069d3684aaa1c9c",
                  "status": "affected",
                  "version": "7d310f241001e090cf1ec0f3ae836b38d8c6ebec",
                  "versionType": "git"
                },
                {
                  "lessThan": "1bb8a7fc64d63ec818e367e1b37676ea2ef2d20c",
                  "status": "affected",
                  "version": "7d310f241001e090cf1ec0f3ae836b38d8c6ebec",
                  "versionType": "git"
                },
                {
                  "lessThan": "87d663d40801dffc99a5ad3b0188ad3e2b4d1557",
                  "status": "affected",
                  "version": "7d310f241001e090cf1ec0f3ae836b38d8c6ebec",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/scsi/mpt3sas/mpt3sas_scsih.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.11"
                },
                {
                  "lessThan": "5.11",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.34",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.16.*",
                  "status": "unaffected",
                  "version": "5.16.20",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.17.*",
                  "status": "unaffected",
                  "version": "5.17.3",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "5.18",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "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]  \u003cTASK\u003e\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."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-02-26T01:54:42.101Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/25c1353dca74ad7cf3fd7ce258fe7c957a147d5e"
            },
            {
              "url": "https://git.kernel.org/stable/c/17d66b1c92bcb41e72271ec60069d3684aaa1c9c"
            },
            {
              "url": "https://git.kernel.org/stable/c/1bb8a7fc64d63ec818e367e1b37676ea2ef2d20c"
            },
            {
              "url": "https://git.kernel.org/stable/c/87d663d40801dffc99a5ad3b0188ad3e2b4d1557"
            }
          ],
          "title": "scsi: mpt3sas: Fix use after free in _scsih_expander_node_remove()",
          "x_generator": {
            "engine": "bippy-5f407fcff5a0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-49082",
        "datePublished": "2025-02-26T01:54:42.101Z",
        "dateReserved": "2025-02-26T01:49:39.247Z",
        "dateUpdated": "2025-02-27T18:22:35.454Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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