CVE-2021-47503
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-47503
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47503.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-47503
- Downstream
- Related
- Published
- 2024-05-24T15:15:10Z
- Modified
- 2025-08-09T20:01:26Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
scsi: pm80xx: Do not call scsiremovehost() in pm8001_alloc()
Calling scsiremovehost() before scsiaddhost() results in a crash:
BUG: kernel NULL pointer dereference, address: 0000000000000108 RIP: 0010:devicedel+0x63/0x440 Call Trace: deviceunregister+0x17/0x60 scsiremovehost+0xee/0x2a0 pm8001pciprobe+0x6ef/0x1b90 [pm80xx] localpciprobe+0x3f/0x90
We cannot call scsiremovehost() in pm8001alloc() because scsiadd_host() has not been called yet at that point in time.
Function call tree:
pm8001pciprobe() |
- pm8001_pci_alloc() | | |- pm8001alloc() | | |- scsi_remove_host() |- scsiadd_host() - References