CVE-2025-37905 (GCVE-0-2025-37905)
Vulnerability from cvelistv5
Published
2025-05-20 15:21
Modified
2025-05-26 05:23
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Balance device refcount when destroying devices Using device_find_child() to lookup the proper SCMI device to destroy causes an unbalance in device refcount, since device_find_child() calls an implicit get_device(): this, in turns, inhibits the call of the provided release methods upon devices destruction. As a consequence, one of the structures that is not freed properly upon destruction is the internal struct device_private dev->p populated by the drivers subsystem core. KMemleak detects this situation since loading/unloding some SCMI driver causes related devices to be created/destroyed without calling any device_release method. unreferenced object 0xffff00000f583800 (size 512): comm "insmod", pid 227, jiffies 4294912190 hex dump (first 32 bytes): 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N.......... ff ff ff ff ff ff ff ff 60 36 1d 8a 00 80 ff ff ........`6...... backtrace (crc 114e2eed): kmemleak_alloc+0xbc/0xd8 __kmalloc_cache_noprof+0x2dc/0x398 device_add+0x954/0x12d0 device_register+0x28/0x40 __scmi_device_create.part.0+0x1bc/0x380 scmi_device_create+0x2d0/0x390 scmi_create_protocol_devices+0x74/0xf8 scmi_device_request_notifier+0x1f8/0x2a8 notifier_call_chain+0x110/0x3b0 blocking_notifier_call_chain+0x70/0xb0 scmi_driver_register+0x350/0x7f0 0xffff80000a3b3038 do_one_initcall+0x12c/0x730 do_init_module+0x1dc/0x640 load_module+0x4b20/0x5b70 init_module_from_file+0xec/0x158 $ ./scripts/faddr2line ./vmlinux device_add+0x954/0x12d0 device_add+0x954/0x12d0: kmalloc_noprof at include/linux/slab.h:901 (inlined by) kzalloc_noprof at include/linux/slab.h:1037 (inlined by) device_private_init at drivers/base/core.c:3510 (inlined by) device_add at drivers/base/core.c:3561 Balance device refcount by issuing a put_device() on devices found via device_find_child().
References
Impacted products
Vendor Product Version
Linux Linux Version: d4f9dddd21f39395c62ea12d3d91239637d4805f
Version: d4f9dddd21f39395c62ea12d3d91239637d4805f
Version: d4f9dddd21f39395c62ea12d3d91239637d4805f
Version: d4f9dddd21f39395c62ea12d3d91239637d4805f
Version: d4f9dddd21f39395c62ea12d3d91239637d4805f
Version: d4f9dddd21f39395c62ea12d3d91239637d4805f
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_scmi/bus.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_scmi/bus.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.182",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.138",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.90",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.28",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.182",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.138",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.28",
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                  "versionEndExcluding": "6.14.6",
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                  "versionEndExcluding": "6.15",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Balance device refcount when destroying devices\n\nUsing device_find_child() to lookup the proper SCMI device to destroy\ncauses an unbalance in device refcount, since device_find_child() calls an\nimplicit get_device(): this, in turns, inhibits the call of the provided\nrelease methods upon devices destruction.\n\nAs a consequence, one of the structures that is not freed properly upon\ndestruction is the internal struct device_private dev-\u003ep populated by the\ndrivers subsystem core.\n\nKMemleak detects this situation since loading/unloding some SCMI driver\ncauses related devices to be created/destroyed without calling any\ndevice_release method.\n\nunreferenced object 0xffff00000f583800 (size 512):\n  comm \"insmod\", pid 227, jiffies 4294912190\n  hex dump (first 32 bytes):\n    00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00  .....N..........\n    ff ff ff ff ff ff ff ff 60 36 1d 8a 00 80 ff ff  ........`6......\n  backtrace (crc 114e2eed):\n    kmemleak_alloc+0xbc/0xd8\n    __kmalloc_cache_noprof+0x2dc/0x398\n    device_add+0x954/0x12d0\n    device_register+0x28/0x40\n    __scmi_device_create.part.0+0x1bc/0x380\n    scmi_device_create+0x2d0/0x390\n    scmi_create_protocol_devices+0x74/0xf8\n    scmi_device_request_notifier+0x1f8/0x2a8\n    notifier_call_chain+0x110/0x3b0\n    blocking_notifier_call_chain+0x70/0xb0\n    scmi_driver_register+0x350/0x7f0\n    0xffff80000a3b3038\n    do_one_initcall+0x12c/0x730\n    do_init_module+0x1dc/0x640\n    load_module+0x4b20/0x5b70\n    init_module_from_file+0xec/0x158\n\n$ ./scripts/faddr2line ./vmlinux device_add+0x954/0x12d0\ndevice_add+0x954/0x12d0:\nkmalloc_noprof at include/linux/slab.h:901\n(inlined by) kzalloc_noprof at include/linux/slab.h:1037\n(inlined by) device_private_init at drivers/base/core.c:3510\n(inlined by) device_add at drivers/base/core.c:3561\n\nBalance device refcount by issuing a put_device() on devices found via\ndevice_find_child()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-26T05:23:24.887Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/91ff1e9652fb9beb0174267d6bb38243dff211bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/ff4273d47da81b95ed9396110bcbd1b7b7470fe8"
        },
        {
          "url": "https://git.kernel.org/stable/c/2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3"
        },
        {
          "url": "https://git.kernel.org/stable/c/969d8beaa2e374387bf9aa5602ef84fc50bb48d8"
        },
        {
          "url": "https://git.kernel.org/stable/c/8a8a3547d5c4960da053df49c75bf623827a25da"
        },
        {
          "url": "https://git.kernel.org/stable/c/9ca67840c0ddf3f39407339624cef824a4f27599"
        }
      ],
      "title": "firmware: arm_scmi: Balance device refcount when destroying devices",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37905",
    "datePublished": "2025-05-20T15:21:38.890Z",
    "dateReserved": "2025-04-16T04:51:23.966Z",
    "dateUpdated": "2025-05-26T05:23:24.887Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-37905\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-20T16:15:26.927\",\"lastModified\":\"2025-05-21T20:25:16.407\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfirmware: arm_scmi: Balance device refcount when destroying devices\\n\\nUsing device_find_child() to lookup the proper SCMI device to destroy\\ncauses an unbalance in device refcount, since device_find_child() calls an\\nimplicit get_device(): this, in turns, inhibits the call of the provided\\nrelease methods upon devices destruction.\\n\\nAs a consequence, one of the structures that is not freed properly upon\\ndestruction is the internal struct device_private dev-\u003ep populated by the\\ndrivers subsystem core.\\n\\nKMemleak detects this situation since loading/unloding some SCMI driver\\ncauses related devices to be created/destroyed without calling any\\ndevice_release method.\\n\\nunreferenced object 0xffff00000f583800 (size 512):\\n  comm \\\"insmod\\\", pid 227, jiffies 4294912190\\n  hex dump (first 32 bytes):\\n    00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00  .....N..........\\n    ff ff ff ff ff ff ff ff 60 36 1d 8a 00 80 ff ff  ........`6......\\n  backtrace (crc 114e2eed):\\n    kmemleak_alloc+0xbc/0xd8\\n    __kmalloc_cache_noprof+0x2dc/0x398\\n    device_add+0x954/0x12d0\\n    device_register+0x28/0x40\\n    __scmi_device_create.part.0+0x1bc/0x380\\n    scmi_device_create+0x2d0/0x390\\n    scmi_create_protocol_devices+0x74/0xf8\\n    scmi_device_request_notifier+0x1f8/0x2a8\\n    notifier_call_chain+0x110/0x3b0\\n    blocking_notifier_call_chain+0x70/0xb0\\n    scmi_driver_register+0x350/0x7f0\\n    0xffff80000a3b3038\\n    do_one_initcall+0x12c/0x730\\n    do_init_module+0x1dc/0x640\\n    load_module+0x4b20/0x5b70\\n    init_module_from_file+0xec/0x158\\n\\n$ ./scripts/faddr2line ./vmlinux device_add+0x954/0x12d0\\ndevice_add+0x954/0x12d0:\\nkmalloc_noprof at include/linux/slab.h:901\\n(inlined by) kzalloc_noprof at include/linux/slab.h:1037\\n(inlined by) device_private_init at drivers/base/core.c:3510\\n(inlined by) device_add at drivers/base/core.c:3561\\n\\nBalance device refcount by issuing a put_device() on devices found via\\ndevice_find_child().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: firmware: arm_scmi: Equilibrar el recuento de referencias de dispositivos al destruir dispositivos. El uso de device_find_child() para buscar el dispositivo SCMI adecuado para destruir provoca un desequilibrio en el recuento de referencias de dispositivos, ya que device_find_child() llama a un m\u00e9todo get_device() impl\u00edcito: esto, a su vez, inhibe la llamada a los m\u00e9todos de liberaci\u00f3n proporcionados tras la destrucci\u00f3n de dispositivos. Como consecuencia, una de las estructuras que no se libera correctamente tras la destrucci\u00f3n es la estructura interna device_private dev-\u0026gt;p, rellenada por el n\u00facleo del subsistema de controladores. KMemleak detecta esta situaci\u00f3n, ya que la carga/descarga de alg\u00fan controlador SCMI provoca que los dispositivos relacionados se creen/destruyan sin llamar a ning\u00fan m\u00e9todo device_release. objeto sin referencia 0xffff00000f583800 (tama\u00f1o 512): comm \\\"insmod\\\", pid 227, jiffies 4294912190 volcado hexadecimal (primeros 32 bytes): 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N.......... ff ff ff ff ff ff ff ff ff 60 36 1d 8a 00 80 ff ff ........`6...... seguimiento inverso (crc 114e2eed): kmemleak_alloc+0xbc/0xd8 __kmalloc_cache_noprof+0x2dc/0x398 device_add+0x954/0x12d0 device_register+0x28/0x40 __scmi_device_create.part.0+0x1bc/0x380 scmi_device_create+0x2d0/0x390 scmi_create_protocol_devices+0x74/0xf8 scmi_device_request_notifier+0x1f8/0x2a8 notifier_call_chain+0x110/0x3b0 blocking_notifier_call_chain+0x70/0xb0 scmi_driver_register+0x350/0x7f0 0xffff80000a3b3038 do_one_initcall+0x12c/0x730 do_init_module+0x1dc/0x640 load_module+0x4b20/0x5b70 init_module_from_file+0xec/0x158 $ ./scripts/faddr2line ./vmlinux device_add+0x954/0x12d0 device_add+0x954/0x12d0: kmalloc_noprof en include/linux/slab.h:901 (en l\u00ednea por) kzalloc_noprof en include/linux/slab.h:1037 (en l\u00ednea por) device_private_init en drivers/base/core.c:3510 (en l\u00ednea por) device_add en drivers/base/core.c:3561 Equilibre el recuento de dispositivos emitiendo un put_device() en los dispositivos encontrados a trav\u00e9s de device_find_child().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8a8a3547d5c4960da053df49c75bf623827a25da\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/91ff1e9652fb9beb0174267d6bb38243dff211bb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/969d8beaa2e374387bf9aa5602ef84fc50bb48d8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9ca67840c0ddf3f39407339624cef824a4f27599\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ff4273d47da81b95ed9396110bcbd1b7b7470fe8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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