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

What is CVE-2023-53124?

CVE-2023-53124 is a medium-severity vulnerability in Linux kernel, published on 2 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-476

Which versions are affected by CVE-2023-53124?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-53124?

Apply the vendor's patch.

Is CVE-2023-53124 being exploited?

There is no known exploitation of CVE-2023-53124 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2023-53124, DEBIAN-CVE-2023-53124, GHSA-726g-xghf-35vc, UBUNTU-CVE-2023-53124.