What is CVE-2023-28466?

CVE-2023-28466 is a High severity Linux kernel vulnerability with a CVSS score of 7.0 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476). CVE-2023-28466 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-28466?

CVE-2023-28466 has a CVSS score of 7.0 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2023-28466?

No patch is currently available for CVE-2023-28466. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-28466 actively exploited?

CVE-2023-28466 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-2023-28466

High

do_tls_getsockopt in net/tls/tls_main.c in the Linux kernel through 6.2.6 lacks a lock_sock call, leading to a race condition (with a resultant use-after-free or NULL pointer dereference).

Package Linux Kernel

Published 2023-03-16

Last modified 2025-05-05

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.0

out of 10

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-476

CVE-2023-28466 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

References

The following references provide additional information about CVE-2023-28466 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html

Mailing List Third Party Advisory
Security
https://security.netapp.com/advisory/ntap-20230427-0006/

Third Party Advisory
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=49c47cc21b5b7a3d8deb18fc57b0aa2ab1286962
Patch

Details

CVE ID CVE-2023-28466

Severity High

CVSS score 7.0 / 10

CVSS version 3.1

Published 2023-03-16

Modified 2025-05-05

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-28466?

CVE-2023-28466 is a High severity Linux kernel vulnerability with a CVSS score of 7.0 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . CVE-2023-28466 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-28466?

CVE-2023-28466 has a CVSS score of 7.0 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2023-28466?

No patch is currently available for CVE-2023-28466. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-28466 actively exploited?

No — CVE-2023-28466 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (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. View CWE-476 on MITRE CWE →