CVE-2021-47503 (GCVE-0-2021-47503)
Vulnerability from cvelistv5
Published
2024-05-24 15:01
Modified
2026-05-11 13:55
Severity ?
6.2 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: pm80xx: Do not call scsi_remove_host() in pm8001_alloc() Calling scsi_remove_host() before scsi_add_host() results in a crash: BUG: kernel NULL pointer dereference, address: 0000000000000108 RIP: 0010:device_del+0x63/0x440 Call Trace: device_unregister+0x17/0x60 scsi_remove_host+0xee/0x2a0 pm8001_pci_probe+0x6ef/0x1b90 [pm80xx] local_pci_probe+0x3f/0x90 We cannot call scsi_remove_host() in pm8001_alloc() because scsi_add_host() has not been called yet at that point in time. Function call tree: pm8001_pci_probe() | `- pm8001_pci_alloc() | | | `- pm8001_alloc() | | | `- scsi_remove_host() | `- scsi_add_host()
References
Impacted products
Vendor Product Version
Linux Linux Version: 05c6c029a44d9f43715577e33e95eba87f44d285
Version: 05c6c029a44d9f43715577e33e95eba87f44d285
Version: 05c6c029a44d9f43715577e33e95eba87f44d285
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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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    "dateReserved": "2024-05-22T06:20:56.205Z",
    "dateUpdated": "2026-05-11T13:55:54.579Z",
    "state": "PUBLISHED"
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}


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