CVE-2023-53124 Information

Description

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.

Reference

https://git.kernel.org/stable/c/090305c36185c0547e4441d4c08f1cf096b32134 https://git.kernel.org/stable/c/6f0c2f70d9929208d8427ec72c3ed91e2251e289 https://git.kernel.org/stable/c/9937f784a608944107dcc2ba9a9c3333f8330b9e https://git.kernel.org/stable/c/a26c775ccc4cfe46f9b718b51bd24313053c7e0b https://git.kernel.org/stable/c/b5e5bbb3fa5f8412e96c5eda7f4a4af6241d6bd3 https://git.kernel.org/stable/c/d3c57724f1569311e4b81e98fad0931028b9bdcd