CVE-2021-47503

Description

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()

Reserved 2024-05-22 | Published 2024-05-24 | Updated 2024-12-19 | Assigner Linux

Product status

Default status
unaffected

05c6c029a44d9f43715577e33e95eba87f44d285 before 1e434d2687e8bc0b3cdc9dd093c0e9047c0b4add
affected

05c6c029a44d9f43715577e33e95eba87f44d285 before f8dccc1bdea7e21b5ec06c957aef8831c772661c
affected

05c6c029a44d9f43715577e33e95eba87f44d285 before 653926205741add87a6cf452e21950eebc6ac10b
affected

Default status
affected

5.10
affected

Any version before 5.10
unaffected

5.10.85
unaffected

5.15.8
unaffected

5.16
unaffected

References

git.kernel.org/...c/1e434d2687e8bc0b3cdc9dd093c0e9047c0b4add

git.kernel.org/...c/f8dccc1bdea7e21b5ec06c957aef8831c772661c

git.kernel.org/...c/653926205741add87a6cf452e21950eebc6ac10b

cve.org (CVE-2021-47503)

nvd.nist.gov (CVE-2021-47503)

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