CVE-2024-43821 scsi: lpfc: Fix a possible null pointer dereference

Ewan D. Milnerequested to merge
e-milne/centos-stream-9:RHEL-64869 into main

scsi: lpfc: Fix a possible null pointer dereference

JIRA: https://issues.redhat.com/browse/RHEL-64869 CVE: CVE-2024-43821

In function lpfc_xcvr_data_show, the memory allocation with kmalloc might fail, thereby making rdp_context a null pointer. In the following context and functions that use this pointer, there are dereferencing operations, leading to null pointer dereference.

To fix this issue, a null pointer check should be added. If it is null, use scnprintf to notify the user and return len.

Signed-off-by: Ewan D. Milne emilne@redhat.com

Merge request reports