What’s Vulnerable › Vulnerabilities

CVE-2023-52508: nvme-fc: Prevent null pointer dereference in nvme_fc_io_getuuid()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-02 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: nvme-fc: Prevent null pointer dereference in nvme_fc_io_getuuid() The nvme_fc_fcp_op structure describing an AEN operation is initialized with a null request structure pointer. An FC LLDD may make a call to nvme_fc_io_getuuid passing a pointer to an nvmefc_fcp_req for an AEN operation. Add validation of the request structure pointer before dereference.

Affected products

• Linux kernel: before 6.1.56; from 6.2 before 6.5.6; 6.6-rc1 — fixed in 6.1.56, 6.5.6

How to fix

Upgrade to a fixed version: Linux kernel 6.1.56, 6.5.6. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/8ae5b3a685dc59a8cf7ccfe0e850999ba9727a3c
• https://git.kernel.org/stable/c/be90c9e29dd59b7d19a73297a1590ff3ec1d22ea
• https://git.kernel.org/stable/c/dd46b3ac7322baf3772b33b29726e94f98289db7
• https://git.kernel.org/stable/c/8ae5b3a685dc59a8cf7ccfe0e850999ba9727a3c
• https://git.kernel.org/stable/c/be90c9e29dd59b7d19a73297a1590ff3ec1d22ea
• https://git.kernel.org/stable/c/dd46b3ac7322baf3772b33b29726e94f98289db7

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