CVE-2023-52809 scsi: libfc: Fix potential NULL pointer dereference in fc_lport_ptp_setup()

What is CVE-2023-52809?

CVE-2023-52809 is a medium-severity vulnerability in Linux kernel, published on 21 May 2024. 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: libfc: Fix potential NULL pointer dereference in fc_lport_ptp_setup()

fc_lport_ptp_setup() did not check the return value of fc_rport_create() which can return NULL and would cause a NULL pointer dereference. Address this issue by checking return value of fc_rport_create() and log error message on fc_rport_create() failed.

Weakness: CWE-476

Which versions are affected by CVE-2023-52809?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-52809?

Apply the vendor's patch.

Is CVE-2023-52809 being exploited?

There is no known exploitation of CVE-2023-52809 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-2023-52809, DEBIAN-CVE-2023-52809, GHSA-rgr4-wrx9-jm8q, UBUNTU-CVE-2023-52809.