CVE-2023-52508

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

MEDIUM
5.5
CVSS Score
Published: March 2, 2024 at 09:52 PM UTC
Updated: June 17, 2026 at 06:42 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≥ 5.18.18v < 6.1.565.18.18 ≤ v < 5.195.19 ≤ v < 6.1.565.19 ≤ v < 6.5.65.19 ≤ v < 6.66.2 ≤ v < 6.5.65.18.186.6 rc17a41fdf27a4b1ee565ce5bf3e409b2df0b8514c4827fc630e4c8087df5a8e8ee013b686bd6f13736
Vendor states this is fixed in 8ae5b3a685dc59a8cf7ccfe0e850999ba9727a3c (fixed)
Vendor states this is fixed in be90c9e29dd59b7d19a73297a1590ff3ec1d22ea (fixed)
Vendor states this is fixed in dd46b3ac7322baf3772b33b29726e94f98289db7 (fixed)
Vendor states this is fixed in 5.19 (unaffected)
Vendor states this is fixed in 6.1.56 (unaffected)
Vendor states this is fixed in 6.5.6 (unaffected)
Vendor states this is fixed in 6.6 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8ae5b3a685dc59a8cf7ccfe0e850999ba9727a3c
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/be90c9e29dd59b7d19a73297a1590ff3ec1d22ea
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/dd46b3ac7322baf3772b33b29726e94f98289db7

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-476

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