NULL Pointer Dereference Affecting kernel package, versions *
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Test your applications- Snyk ID SNYK-RHEL7-KERNEL-7145728
- published 27 May 2024
- disclosed 24 May 2024
Introduced: 24 May 2024
CVE-2021-47503 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:7 kernel.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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()