cve-2021-47503
Vulnerability from cvelistv5
Published
2024-05-24 15:01
Modified
2024-11-04 12:07
Severity ?
6.2 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
scsi: pm80xx: Do not call scsi_remove_host() in pm8001_alloc()
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1e434d2687e8bc0b3cdc9dd093c0e9047c0b4add
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/653926205741add87a6cf452e21950eebc6ac10b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f8dccc1bdea7e21b5ec06c957aef8831c772661c
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

{
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              "baseScore": 6.2,
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              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
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                "id": "CVE-2021-47503",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-28T15:53:11.089005Z",
                "version": "2.0.3"
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                "description": "CWE-476 NULL Pointer Dereference",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/pm8001/pm8001_init.c"
          ],
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: pm80xx: Do not call scsi_remove_host() in pm8001_alloc()\n\nCalling scsi_remove_host() before scsi_add_host() results in a crash:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000108\n RIP: 0010:device_del+0x63/0x440\n Call Trace:\n  device_unregister+0x17/0x60\n  scsi_remove_host+0xee/0x2a0\n  pm8001_pci_probe+0x6ef/0x1b90 [pm80xx]\n  local_pci_probe+0x3f/0x90\n\nWe cannot call scsi_remove_host() in pm8001_alloc() because scsi_add_host()\nhas not been called yet at that point in time.\n\nFunction call tree:\n\n  pm8001_pci_probe()\n  |\n  `- pm8001_pci_alloc()\n  |  |\n  |  `- pm8001_alloc()\n  |     |\n  |     `- scsi_remove_host()\n  |\n  `- scsi_add_host()"
        }
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        "dateUpdated": "2024-11-04T12:07:11.264Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        },
        {
          "url": "https://git.kernel.org/stable/c/653926205741add87a6cf452e21950eebc6ac10b"
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      ],
      "title": "scsi: pm80xx: Do not call scsi_remove_host() in pm8001_alloc()",
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      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47503",
    "datePublished": "2024-05-24T15:01:50.358Z",
    "dateReserved": "2024-05-22T06:20:56.205Z",
    "dateUpdated": "2024-11-04T12:07:11.264Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47503\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-24T15:15:10.567\",\"lastModified\":\"2024-07-03T01:38:04.253\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nscsi: pm80xx: Do not call scsi_remove_host() in pm8001_alloc()\\n\\nCalling scsi_remove_host() before scsi_add_host() results in a crash:\\n\\n BUG: kernel NULL pointer dereference, address: 0000000000000108\\n RIP: 0010:device_del+0x63/0x440\\n Call Trace:\\n  device_unregister+0x17/0x60\\n  scsi_remove_host+0xee/0x2a0\\n  pm8001_pci_probe+0x6ef/0x1b90 [pm80xx]\\n  local_pci_probe+0x3f/0x90\\n\\nWe cannot call scsi_remove_host() in pm8001_alloc() because scsi_add_host()\\nhas not been called yet at that point in time.\\n\\nFunction call tree:\\n\\n  pm8001_pci_probe()\\n  |\\n  `- pm8001_pci_alloc()\\n  |  |\\n  |  `- pm8001_alloc()\\n  |     |\\n  |     `- scsi_remove_host()\\n  |\\n  `- scsi_add_host()\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: pm80xx: No llamar a scsi_remove_host() en pm8001_alloc() Llamar a scsi_remove_host() antes de scsi_add_host() produce un bloqueo: ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 00000000000000108 RIP : 0010:device_del+0x63/0x440 Seguimiento de llamadas: device_unregister+0x17/0x60 scsi_remove_host+0xee/0x2a0 pm8001_pci_probe+0x6ef/0x1b90 [pm80xx] local_pci_probe+0x3f/0x90 No podemos llamar a scsi_remove_host() en pm8001_ alloc() porque scsi_add_host() no lo ha hecho sido llamado todav\u00eda en ese momento. \u00c1rbol de llamadas a funciones: pm8001_pci_probe() | `- pm8001_pci_alloc() | | | `- pm8001_alloc() | | | `- scsi_remove_host() | `- scsi_add_host()\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":6.2,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":2.5,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1e434d2687e8bc0b3cdc9dd093c0e9047c0b4add\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/653926205741add87a6cf452e21950eebc6ac10b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f8dccc1bdea7e21b5ec06c957aef8831c772661c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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