What is CVE-2023-52508?

CVE-2023-52508 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 5.18.18 onward and patched in 6.1.56, 6.5.6 and 6.6. CVE-2023-52508 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52508?

CVE-2023-52508 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2023-52508?

Yes, CVE-2023-52508 has been patched. Fixed versions include 6.1.56, 6.5.6 and 6.6. If you are running Linux kernel 5.18.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52508 actively exploited?

CVE-2023-52508 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2023-52508

Medium

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.

Package Linux Kernel

Published 2024-03-02

Last modified 2025-03-19

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-476

CVE-2023-52508 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.18.18, 5.19 and later are affected. Fixed in 6.1.56, 6.5.6, 6.6 and their respective stable series.

Affected from

≥ 5.18.18 ≥ 5.19

Fixed in

✓ 6.1.56 6.1.x ✓ 6.5.6 6.5.x ✓ 6.6

References

3 total

Kernel Git
https://git.kernel.org/stable/c/8ae5b3a685dc59a8cf7ccfe0e850999ba9727a3c

Patch
Kernel Git
https://git.kernel.org/stable/c/be90c9e29dd59b7d19a73297a1590ff3ec1d22ea

Patch
Kernel Git
https://git.kernel.org/stable/c/dd46b3ac7322baf3772b33b29726e94f98289db7

Patch

Details

CVE ID CVE-2023-52508

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-03-02

Modified 2025-03-19

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52508?

CVE-2023-52508 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 5.18.18 onward and has been patched in 6.1.56, 6.5.6 and 6.6. CVE-2023-52508 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52508?

CVE-2023-52508 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2023-52508?

Yes. CVE-2023-52508 has been patched. Fixed versions include 6.1.56, 6.5.6 and 6.6. If you are running Linux kernel 5.18.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52508 actively exploited?

No. CVE-2023-52508 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.