CVE-2023-53124: scsi: mpt3sas: Fix NULL pointer access in mpt3sas_transport_port_add()

First published: Fri May 02 2025(Updated: )

In the Linux kernel, the following vulnerability has been resolved: scsi: mpt3sas: Fix NULL pointer access in mpt3sas_transport_port_add() Port is allocated by sas_port_alloc_num() and rphy is allocated by either sas_end_device_alloc() or sas_expander_alloc(), all of which may return NULL. So we need to check the rphy to avoid possible NULL pointer access. If sas_rphy_add() returned with failure, rphy is set to NULL. We would access the rphy in the following lines which would also result NULL pointer access.

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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