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
Configurations
Configuration 1 (hide)
|
History
01 Apr 2025, 18:40
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/1e434d2687e8bc0b3cdc9dd093c0e9047c0b4add - Patch | |
| References | () https://git.kernel.org/stable/c/653926205741add87a6cf452e21950eebc6ac10b - Patch | |
| References | () https://git.kernel.org/stable/c/f8dccc1bdea7e21b5ec06c957aef8831c772661c - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:* |
|
| First Time |
Linux linux Kernel
Linux |
Information
Published : 2024-05-24 15:15
Updated : 2025-04-01 18:40
NVD link : CVE-2021-47503
Mitre link : CVE-2021-47503
CVE.ORG link : CVE-2021-47503
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference